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 would like to buy some stamps, please.
我想买些邮票。
What about another dance?
再跳一曲好吗？
My pen dropped on the ground when I was walking in the park.
当我在公园里散步的时候，我的钢笔掉到地上了。