释义
n.
the process or action of exhaling
呼出。
[count noun]an expiration of air from the lungs
呼气
-
he let his breath out in a long exhalation of relief .他如释重负地长长地呼了一口气。
[count noun]an amount of vapour or fumes given off
散发的蒸气（或烟雾）。