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
Sometimes I lack patience in what I am doing. However, I'm very careful with my work.
我有时候对自己的所作所为缺乏耐心，不过工作很细心。
We can only guess what his next move might be.
我们只能推测他在下一次将有什么动向。
You used to smoke 40 cigarettes a day.
他以前每天狂抽四十根烟。