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
Hot dog? Only seventy-five cents.
要热狗吗 只要七十五分钱。
What's your wholesale price on this item?
这种产品你们的批发价是多少呢？
When they arrived, he said: Welcome to our factory! Please come this way. Don't rush.
“欢迎参观我们厂！请走这边。别急。”