Laboratory Work
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EN: The use of 'Welcome to [Place]' followed by a purpose or time modifier like 'for the first time' is a standard formal greeting structure. In academic settings, 'undergraduate' acts as a noun adjunct (a noun modifying another noun) to specify the level of the facility.
Welcome to the international conference for the first time.
EN: The phrase 'for the first time' functions as an adverbial of frequency/time, typically placed at the end of the sentence to emphasize the novelty of the experience.
He visited the research center for the first time yesterday.
EN: In Western academic culture, professors often greet students by their first names to create a welcoming yet professional environment, while students typically address professors by their title and last name (e.g., Professor James).
EN: The correlative conjunction 'both... and...' is used to emphasize that two qualities or facts are equally true. In C1 level usage, it often links sophisticated adjectives to express complex emotional states.
The new policy is both economically sound and socially responsible.
EN: The verb 'admit' followed by an infinitive phrase ('to admit') often functions as a pragmatic marker to signal honesty or vulnerability, setting a sincere tone for the conversation.
I have to admit, I didn't expect the project to be this successful.
EN: The past participle 'intimidated' functions as an adjective describing the subject's feeling. The preposition 'by' is used to introduce the agent or cause of that feeling.
She was intimidated by the sheer volume of data she had to analyze.
EN: In academic settings, addressing a professor by their title ('Professor') is standard and shows respect. Hana's admission of being 'intimidated' is a common way to build rapport through humility, which is often well-received by mentors in Western academic culture.
EN: Inversion in conditional sentences (Second Conditional): When using 'were' in a hypothetical condition, the 'if' can be omitted by placing 'were' before the subject. This structure is more formal and sophisticated than 'If you were to...'.
Were he to resign now, the company would face a major crisis.
EN: The use of 'would' for hypothetical consequences: In the main clause of a second conditional, 'would' (or its contraction 'd') is used to describe the result of an unlikely or imaginary situation.
I'd be surprised if they finished the project on time.
EN: In academic and professional settings, using inverted conditionals like 'Were you to...' conveys a high level of formality and intellectual rigor. It is common in lectures or when a superior (like a professor) is giving serious advice.
EN: 'Fair point' is an elliptical expression (shortened from 'That is a fair point') used in conversation to acknowledge the validity of an opponent's or speaker's argument without necessarily agreeing with their entire position.
Fair point, but we still need to consider the budget constraints.
EN: The use of 'So' as a discourse marker at the beginning of a sentence serves to transition the conversation toward a new phase or to initiate a specific inquiry based on the current context.
So, what's the next step in our plan?
EN: In academic and professional English, 'Fair point' is a polite way to concede a point during a discussion. It shows that you are listening and respect the other person's expertise, which is crucial in a mentor-student relationship like the one between Hana and the Professor.
EN: The phrase 'First and foremost' is an idiomatic fixed expression used to emphasize that the following point is the most important among several. It is common in formal speeches and academic contexts.
First and foremost, we must ensure the data is accurate before publishing the report.
EN: The verb 'let' is a causative verb followed by an object and a bare infinitive (verb without 'to'). In this context, it is used as a polite way to introduce a planned action or to offer information.
Let me explain the reasoning behind this decision.
EN: The relative clause 'that govern everything we do here' uses the verb 'govern' to mean 'to control or influence the way something happens'. Note that 'everything we do here' contains a reduced relative clause where 'that/which' is omitted.
The laws that govern international trade are complex.
EN: In academic and professional settings, using structured phrases like 'First and foremost' helps establish a clear hierarchy of information, which is a hallmark of Western formal communication styles.
EN: The verb 'suppose' is used here as a hedging device to express a belief or opinion with a degree of uncertainty or politeness, common in academic and professional registers.
I suppose we should double-check the results before publishing.
EN: The adjective 'hands-on' is a compound modifier meaning involving direct practical experience rather than theoretical study.
The course provides hands-on training in digital marketing.
EN: The word 'indispensable' is a high-level synonym for 'essential' or 'necessary', used to describe something that is absolutely necessary and cannot be replaced.
A reliable internet connection is indispensable for remote work.
EN: In academic and scientific environments, students are expected to be proactive (reading the handbook beforehand) while acknowledging the authority and necessity of expert supervision (guidance is indispensable). This shows a balance of independence and respect.
EN: Negative Inversion: When a negative adverbial phrase (like 'Under no circumstances') starts a sentence for emphasis, the auxiliary verb (should) must come before the subject (you).
Under no circumstances should you leave the laboratory door unlocked.
EN: Double Negative for Obligation: Using 'without' after a negative command (should not... without) creates a strong requirement, implying that the two actions must happen together.
You must not enter the construction site without wearing a hard hat.
EN: In academic and professional laboratory settings, the register is highly formal and safety-oriented. Using structures like 'Under no circumstances' emphasizes the non-negotiable nature of safety protocols, reflecting a culture of strict compliance to prevent liability and injury.
EN: The use of 'those' as a demonstrative pronoun refers back to 'fume hoods' in a plural sense, even though the previous question used the singular 'the fume hood'. This shift occurs because the speaker is referring to the general category of such devices they have seen across multiple videos.
I like the design of this smartphone, but those in the display case look more durable.
EN: The present perfect tense ('have seen') combined with the past participle ('used') in a contrastive structure. The ellipsis of 'have' before 'never used' is common in informal speech when the subject and auxiliary verb remain the same.
I've visited Paris many times but never climbed the Eiffel Tower.
EN: In a laboratory setting, admitting lack of experience with equipment (like a fume hood) is highly encouraged for safety reasons. The phrase 'Got it' is a common, informal way to acknowledge instructions in North American English, showing a proactive and cooperative attitude.
EN: The conjunction 'so that' (often followed by 'can', 'could', 'will', or 'would') is used to express purpose or result. In formal scientific contexts, it explains the functional objective of a mechanism.
The laboratory is kept at a constant temperature so that the chemical reactions remain stable.
EN: The passive construction 'be exposed to' is used to describe a state where someone is subjected to an external influence or substance, often something harmful.
Staff must ensure they are not exposed to high levels of radiation.
EN: In academic and professional laboratory settings, the use of precise terminology (e.g., 'extracts' instead of 'takes out') is essential for clarity and safety. The 'fume hood' is a standard safety device in chemistry labs worldwide.
EN: The phrase 'if I may ask' is a polite parenthetical expression used to soften a direct question, especially when addressing someone of higher status or in a formal setting. It functions as a conditional clause that acknowledges the speaker's potential intrusion.
What is the reason for this sudden change in policy, if I may ask?
EN: The present continuous tense ('are we conducting') is used here to refer to a planned future action or an activity that is about to commence immediately. This is common in professional or academic contexts to discuss scheduled tasks.
Which software are we using for the presentation tomorrow?
EN: In academic and professional English, using 'if I may ask' or 'if you don't mind me asking' demonstrates respect for the hierarchy and the other person's time. It is a hallmark of 'hedging' in polite conversation.
EN: The Future Continuous tense ('will be' + present participle) is used here to describe an action that will be in progress at a specific time in the future. In a professional or academic context, it often sounds more polite or certain than the simple future, suggesting a planned schedule.
We will be conducting the survey throughout the next semester.
EN: The preposition 'between' is used to specify the relationship or interaction involving two distinct entities (zinc and hydrochloric acid). In scientific English, it is the standard way to introduce reactants in a chemical process.
The bond between hydrogen and oxygen is covalent.
EN: In academic and scientific settings, precision in terminology is crucial. Using the full names of chemicals (e.g., 'hydrochloric acid' instead of just 'acid') and specific terms like 'reaction rate' reflects the rigorous nature of laboratory protocols.
EN: The adverb 'actually' is used here as an intensifier to signal a surprising or contrasting fact, often used in academic or professional settings to add depth to a personal contribution to the conversation.
I actually found the complex equations quite intuitive after the lecture.
EN: The verb 'debate' can be used transitively (debate something) or intransitively with 'with'. In this context, it implies a formal or structured discussion of opposing points of view rather than a simple argument.
The committee debated the ethical implications of the new research for hours.
EN: In Western academic culture, students are often encouraged to 'debate' or 'challenge' concepts with their teachers. This is seen as a sign of critical thinking and deep engagement with the subject matter, rather than a sign of disrespect.
EN: The use of 'as' followed by a past participle (indicated) functions as a reduced relative clause or a subordinating conjunction of manner, meaning 'in the way that'. It is common in formal instructions to refer to established guidelines.
Please complete the form as shown in the sample provided.
EN: The imperative mood ('set up') is used here to give a direct instruction. In a professional or academic setting, it is often preceded by 'Now' or 'Excellent' to transition from praise to the next task without sounding overly aggressive.
Now, analyze the data carefully before drawing a conclusion.
EN: In a laboratory setting, 'bench' refers specifically to the heavy-duty work table where experiments are conducted, not a park bench. The tone used by the professor is 'mentoring'—authoritative yet encouraging, which is typical in academic research environments.
EN: The causative verb 'let' is followed by an object and a bare infinitive (verb without 'to'). It is commonly used to express permission or, as in this case, a self-directed suggestion or intention.
Let me confirm the reservation before we leave.
EN: The use of 'a' before specific laboratory equipment serves as a count noun marker. In scientific contexts, precision in naming items (e.g., 'conical flask' vs. 'beaker') is essential for clarity and safety.
Please pass me a graduated pipette.
EN: The question 'Is that everything?' is a fixed idiomatic expression used to verify if a list is complete or if all necessary tasks/items have been addressed.
I've packed the tent, the sleeping bags, and the stove. Is that everything?
EN: In academic and professional STEM environments, precision is a cultural value. Using the exact names for equipment (like 'conical flask' instead of just 'bottle') demonstrates competence and adherence to safety standards.
EN: The sentence uses 'Should' at the beginning to form a conditional clause (Inversion in First Conditional). This is a formal alternative to 'If you should notice' or 'If you notice', often used in professional or academic instructions to express a possibility.
Should you require further assistance, please do not hesitate to contact our department.
EN: The word 'irregularities' functions as the direct object of the verb 'notice'. In a scientific context, it refers to deviations from the expected norm or standard results.
The technician identified several irregularities in the data set.
EN: In academic and scientific settings, maintaining a 'logbook' is a legal and ethical requirement. It serves as a permanent record of observations, ensuring that data can be verified by others. The use of formal language like 'Should you...' reflects the serious nature of laboratory protocols.
EN: The phrase 'Will do' is an elliptical expression common in spoken English, where the subject 'I' is omitted. It functions as a concise way to confirm agreement or commitment to a request.
A: Could you send me the file? B: Will do.
EN: 'Provided that' is a formal subordinating conjunction used to express a condition. It is synonymous with 'if' or 'on the condition that', but carries a more precise, often contractual or procedural tone.
You may borrow the car, provided that you return it by midnight.
EN: In academic and scientific settings, intellectual property and safety protocols are strictly enforced. Asking for permission to take photos ('provided that's permitted') demonstrates professional etiquette and respect for laboratory rules, which may prohibit photography due to sensitive research or safety concerns.
EN: The phrase 'By all means' is a polite and emphatic way to give permission or express agreement, often used in formal or semi-formal registers to encourage the listener.
If you have any further questions, please contact me by all means.
EN: The conjunction 'once' is used to mean 'as soon as' or 'after'. In this context, it introduces a time clause using the present perfect tense ('have obtained') to emphasize the completion of an action before the main instruction.
Once you have signed the contract, we can proceed with the project.
EN: The imperative mood ('compare') is used here to give a direct instruction. It is followed by the preposition 'with' to indicate the two items being evaluated against each other.
Compare the original document with the translated version to ensure accuracy.
EN: In academic and professional settings, 'By all means' is a common way for a superior (like a professor) to encourage a subordinate's initiative (like taking photos for a report). It sounds more supportive and formal than just saying 'Yes' or 'Sure'.
EN: The phrase 'What if' is used to introduce a hypothetical situation, often expressing concern, curiosity, or a request for guidance on a potential future problem.
What if the flight is delayed and we miss our connection?
EN: The verb 'deviate' is a formal term often used in scientific or statistical contexts to describe a departure from a standard, norm, or expected path, typically followed by the preposition 'from'.
The final product must not deviate from the original design specifications.
EN: The past tense 'anticipated' is used here within a relative clause to refer to an expectation formed prior to the current moment of observation.
The turnout for the event was much higher than the organizers had anticipated.
EN: In academic and scientific settings, questioning potential errors or unexpected outcomes is highly valued. It demonstrates critical thinking and a proactive approach to the scientific method rather than a fear of failure.
EN: Negative Inversion with 'Not only': When 'not only' starts a clause, the auxiliary verb (do/does/did) or modal verb must precede the subject, creating a question-like word order for emphasis.
Not only did he complete the project early, but he also exceeded the performance targets.
EN: The correlative conjunction 'Not only... but (also)': This structure connects two parallel clauses or phrases. In formal academic contexts, 'also' is sometimes omitted or replaced by 'as well' at the end of the sentence.
The study not only identifies the cause of the disease but suggests potential treatments.
EN: In scientific discourse, 'discrepancy' and 'hypothesis' are key terms. The professor's attitude reflects the 'Scientific Method' culture, where unexpected results are not seen as failures but as essential data for refining theories.
EN: The comparative structure 'as much about A as (about) B' is used to emphasize that two things are equally important, or to shift focus to the first element (A) as being just as significant as the more obvious second element (B).
Leadership is as much about listening as it is about giving orders.
EN: The verb 'suppose' is used here to express a tentative belief or a conclusion reached based on the evidence provided in the conversation. It conveys a reflective and slightly formal register.
I suppose we should reconsider our initial strategy.
EN: Gerunds (embracing, celebrating) are used after the preposition 'about' to function as nouns, describing the core essence or activities of a subject.
Life is about taking risks and learning from them.
EN: In Western scientific culture, failure is often viewed as a necessary stepping stone to discovery rather than a personal shortcoming. This sentence reflects the 'growth mindset' prevalent in modern academic and professional environments.
EN: The structure 'couldn't have + past participle' is used to express that something was already done to the highest possible degree or that a better outcome was impossible. It is a common way to show strong agreement.
I couldn't have finished the project without your help.
EN: The tag question 'shall we?' is used after 'let's' to make a suggestion sound more polite, inclusive, or to seek confirmation from the listener.
Let's take a break, shall we?
EN: In academic or professional settings, using 'shall we?' instead of a direct command is a way to soften the tone and show that the speaker values the other person's participation, reflecting a collaborative spirit.
Key vocabulary words with IPA pronunciation, definitions, example sentences, and interactive quizzes.
Phrases with type tags, bilingual definitions, usage notes, and example sentences.
Most importantly; more than anything else.
Never; used to emphasize that something should not happen.
To prepare or arrange something for use.
Of course; used to give permission or encouragement.
Used to express complete agreement with what someone has just said.
A ventilated enclosure in a laboratory, in which harmful volatile chemicals can be used or kept to prevent the inhalation of toxic vapors.
A long, sturdy work table used for scientific research, experiments, or manual work in a laboratory.
A piece of laboratory glassware with a flat bottom, a conical body, and a cylindrical neck, also known as an Erlenmeyer flask.
A common piece of laboratory equipment used to measure the volume of a liquid, characterized by its narrow, cylindrical shape and marked graduations.
The branch of physical chemistry that is concerned with understanding the rates of chemical reactions.