吹气

chuī qì nuǎn huo shǒu

吹气暖和手

blow one's hands to make them warm

tā wǎng sù jiāo dài li chuī qì

他往塑胶袋里吹气。

He was blowing into a plastic bag.

jǐng chá yào wǒ duì zhe jiǔ jīng hán liàng tàn cè qì chuī qì

警察要我对着酒精含量探测器吹气。

The policeman asked me to blow into the breathalyser.