air pump

• n. 抽气机；排气泵

英英释义

Noun:

1. a pump that moves air in or out of something

例句

用作名词 (n.)

1. Vacuum packaging is produced by pumping all the air out of the package.
   真空的包装都是用抽气机把空气抽出的。

近反义词

【近义词】

• vacuum pump 真空泵