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
Remember catching your first fish?
还记得你第一次钓到鱼的情形吗？
About how long does it take?
大约要坐多久？
What's that in your hand?
你手里拿的是什么？