Rotary vacuum pump
[化] 旋转真空泵
🧩 词语组成解析
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
She has not indicated how she proposes to react.
她未表示打算做何回应。
He has gone to America.
他去美国了。[动作结束后的结果持续至今]
Glad to hear that.
太好了