Reciprocating vacuum pump
[化] 往复式真空泵
🧩 词语组成解析
[医] 交互的, 往复的
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
Don't stand on ceremony, make yourself at home.
别客气，随便吃。
It depends on the quantity ordered.
这要根据所订的数量而定。
I felt no regret for it.
对这件事我不觉得后悔。