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
No,
不对，
Why did the company demand his resignation?
为什么公司命令他辞职呢？
What!It's only eight fifteen.
什么！现在只有8点15分。