Acv
abbr. 气垫船（air-cushion vehicle）
🗣️ 情景例句
and she belongs to Mr. and Mrs. Levinson.
它是Levinson夫妇家的狗。
Hiking gives you time to think.
郊游可以使你有时间思考。
The city at one time must have been prosperous, for it enjoyed a high level of civilization.
这座古城肯定一度很繁荣，因为它曾享有高度的文明，