doubtful

中文意思

• adj. 怀疑的
• adj. 不确定的

英文释义

• adj. open to doubt or suspicion
• adj. fraught with uncertainty or doubt
• adj. unsettled in mind or opinion

例句

1. adj. 怀疑的

   The doctor was doubtful about the success of the new treatment.

   医生对这种新治疗方法的疗效持怀疑态度。

2. adj. 不确定的

   It is doubtful whether the flight will take off on time due to the heavy rain.

   由于下大雨，航班能否按时起飞还不确定。