exhalation

名词 exhalation:

1. exhaled breath
   同义词：halitus
2. the act of expelling air from the lungs
   同义词：expiration, breathing out

ex.ha.la.tion

n.（名词）
The act or an instance of exhaling.
发散：发散的行为或事例
Something, such as air or vapor, that is exhaled.
散发物：以气体或蒸汽形式发散出的东西