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
Hello, Harry.
你好 ，Harry。
Thank you for seeing me off.
谢谢你送行。
The bull was busy with the matador at the time,
当时那公牛正忙于对付斗牛士，