/eksˈheɪl ||; ɛksˈhel/verb [I,T] (formal 正式) to breathe out the air, smoke, etc. in your lungs 呼出（气、烟等） [OPP] inhale 反义词为 inhale➔exhalation /ˌekshəˈleɪʃn ||; ˌɛksəˈleʃən/ noun [U]
*exhaust²
/ɪgˈzɔ:st ||; ɪgˈzɔst/verb[T]
1 to make sb very tired 使精疲力竭: The long journey to work every morning exhausted him.每天早上都要长途跋涉上班，把他累坏了。
2 to use sth up completely; to finish sth 耗尽；用光: All the supplies of food have been exhausted.可以吃的都吃光了。
3 to say everything you can about a subject, etc 详尽论述: Well, I think we've exhausted that topic.我想那个题目我们说够了。