Backing vacuum
[化] 前级真空
🧩 词语组成解析
backing
[['bækiŋ]]
n. 后退, 衬背, 后援, 支持者\\n[化] 衬垫
🗣️ 情景例句
I would like to live somewhere near the university, or at least on a bus line.
我想住在大学附近，或者至少有公共汽车直达。
Sail while the wind blows; wind and tide wait for no man.
驶船要乘风，风潮不等人。
What's the time?
几点了？