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
Where did you receive your master degree?
你在哪里获得硕士学位的？
I'm not myself today.
我今天心神不宁。
So one's circle of friends grows.
朋友的圈子就这样不断扩大。