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
It's good, but it's a little expensive.
很好，不过价格有一点贵。
I did Math this morning.
我今天早上做算术。
Hello, I'm Bill. What's your name?
你好，我叫比尔。你叫什么名字？