He showed him how to blow into the ivory mouthpiece.

他给他演示了如何把气吹进象牙吹口。

The policeman asked me to blow into the breathalyser.

警察要我对着呼吸检测仪吹气。

The policeman asked me to blow into a plastic bag.

这个警察要我吹一下塑料袋。

Please blow into the breathalyzer.

请朝酒精测试仪吹气。

Mind your hat it'll blow into the river.

当心你的帽子吹到河里去了。