Aeroporotomy
呼吸道通气术
🗣️ 情景例句
Poor baby.
可怜的小东西。
I want to change some British sterling into Renminbi.
我想把一些英镑换成人民币。
where chance discoveries play a much larger part than they do in physical and mechancal industries.
同物理和机械工业相比，化学工业中偶然发现的机会要多得多。