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 don't see why you are kicking up such a fuss.
我不明白你为什么要这样小题大作。
Money is often lost for want of money.
往往由于缺乏金钱而丧失金钱。
How was your weekend?
你周末过得怎么样？