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'm a workaholic, so for me vacations are very boring.
我是个工作狂！度假对我来说太无聊了！
A man without a smiling face must not open a shop.
人无笑脸，不要开店。
It's not.it is a little oversized.
不是，它比标准的大了一点。