Perflation
[医] 吹气引流法, 吹入法; 自然通气
🗣️ 情景例句
I think you ought to
我觉得，你们应该
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
What's the weather like today?
今天天气怎么样？