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 think I'll wait until tomorrow.
我想我就等明天再谈。
Grasp all, lose all.
贪多必失。
Look at the snow! It's quite light.
瞧这雪！这么小。