Vantilation
换气,通风,空气的流通,通风设备
🗣️ 情景例句
You'll have your tonsils out tomorrow,
明天你的扁桃腺一切除，
Observation is the best teacher.
观察为良师。
The Officer went through the case with great care.
那位官员十分仔细地把箱子检查了一遍。