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 really have to go.
我真的得走了。
Could you tell me where is the exit?
你能不是告诉我出口在哪里？
No, it isn't. Ask that woman. I think it's her bike.
不，不是我的。问问那个妇女吗。我想这是她的自行车。