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
with the question of whether I go back to work or not.
为我是否回去工作这个问题。
I haven't seen you for ages.
好久没见了。
he answered me, but he spoke neither slowly nor clearly.
他回答了，但他讲得既不慢也不清楚。