Perflation
[医] 吹气引流法, 吹入法; 自然通气
🗣️ 情景例句
We're in here, Dad.
我们在里面， 爸爸。
How many passengers were on the train?
在火车上有多少旅客？
But I didn't see much during the flight because there was too much cloud.
但我在飞行途中并没有看到什么东西，因为云层很厚。