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
And right now, he needs a friend.
而且现在， 他需要一个朋友。
Who holds the purse rules the house.
钱可神通。
I'm very much interested in your personal computers.
我对你们的个人电脑深感兴趣。