Reciprocating piston pump
[化] 往复式活塞泵
🧩 词语组成解析
[医] 交互的, 往复的
piston
['pɪstən]
n. <机>活塞;
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
Yes?
什么？
He has a car.
他有一辆车。
I was proud that we had come across something that was completely unknown and valuable and,
让我感到自豪的是，我们在无意中发现了不为世人所知的、有价值的东西，