重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 选集，通常指诗歌、短篇小说或文章的汇编
在本文中： 具备资格的，符合条件的
在本文中： 极其复杂且难以理解的
在本文中： 逐条列出，详细列明
在本文中： 推测，假定（通常基于可能性）
在本文中： 正是如此，精确地
在本文中： 核实，查证
在本文中： 两周，十四天
片语包含类型标示、双语定义、用法说明和例句。
Selling very quickly due to high popularity.
极其畅销，供不应求
To do something with extreme care or effort because it is perceived as vital.
拼命地，极其谨慎地（仿佛命悬一线）
To explain a process or task to someone step by step.
引导，逐步说明
No longer in danger or under suspicion; having completed a difficult process.
脱离困境，手续完成
To explain something in a very clear and detailed way.
详细解释，讲得清清楚楚
A government-approved system allowing international travelers to buy goods without paying certain local taxes.
免税方案/计划
The official department that administers and collects the duties levied by a government on imported goods.
海关
Large bags or suitcases that are carried in the cargo compartment (the hold) of an aircraft, rather than in the cabin.
托运行李
To record a specific amount on a cash register for a purchase.
（在收银机上）结账/纪录交易