Vantilation
换气,通风,空气的流通,通风设备
🗣️ 情景例句
My doctor says I could live to be 100.
我的医生说我能活到100岁。
Score twice before you cut once.
三思而行。
I don't have any small pads. I only have large one. Do you want a pad?
我没有小本的信纸，只有大本的。您要一本吗？