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
Marriage between homesexuals is a controversial topic today.
同性恋者之间的婚姻如今是个具有争议的话题。
The moon does not heed the barking of dogs.
月亮不怕狗吠。
What's the time?
几点了？