Vantilation
换气,通风,空气的流通,通风设备
🗣️ 情景例句
you had some doubts about wanting to go to Michigan.
你对上Michigan大学有些疑虑。
An idle youth, a needy age.
少壮不努力，老大徒伤悲。
And it should not be forgotten how small those resources are in a poor and backward country.
不应忘记，在一个贫穷落后的国家里，那部分财力是很有限的。