Reciprocating pump
[化] 往复泵
🧩 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
Where are you from?
你是从哪儿来的？
Experience is a school from which one can never graduate.
经验无止境。
He did very badly on the exam----worse than expected almost the worst in the class.
他考的不好，比期望的还糟。几乎是全班最差的。