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
He's an exceptionally fine young man and should be a good husband.
他是一个很好的年轻人将来也会是一位好丈夫的。
A living dog is better than a dead lion.
一条活狗胜过一头死狮。
At the same time, a number of teenagers climbed on to the dish and held a little party of their own.
就在这个时候，许多十几岁的孩子爬盘子举行他们自己的集会。他们跳起了舞，盘子难以承受。