Vantilation
换气,通风,空气的流通,通风设备
🗣️ 情景例句
Have you ever been to Niagra Falls?
你去过尼亚拉加瀑布吗？
Who has never tasted bitter, knows not what is sweet.
不尝黄连苦，怎知蜂蜜甜。
No, thanks. It's big, but it isn't heavy. It's light.
不用了，谢谢，是大盒子，但不重。很轻。