Vantilation
换气,通风,空气的流通,通风设备
🗣️ 情景例句
Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动，例如召开纪念大会，植树造林，
But this doesn't mean that Mr. Li is a bookworm.
但这并不意味着李先生是个书呆子。
The woman was a visitor. She did not live in London. She lived in the country.
这老太太是位游客，不住在伦敦。