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
I really had a great evening.
我真是过了一个绝妙的晚上。
That's the way it is.
事情就是这样。
Goodness! Zhen Jie! I can't believe it. What are you doing here?
啊，天那！郑杰！我简直不能相信。你到这里来有什么事吗？