Vacuum diffusion pump
[化] 真空扩散泵
🧩 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
He says I never turn them out when I leave.
他说我离开时从不关灯。
Look what you did, squirt!
小子，你仔细看看你做的好事！
There is a boat in the river.
河里有一条船。