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
Oh yes, the May Fourth Movement. I've read about it.
哦，是的，五四运动，我听说过。
What's the basis of your belief that the product is safe?
你凭什么相信产品是安全的？
From the moment he arrived there, he kept on pestering his doctor to tell him when he would be able to go home.
从他进医院那一刻时，他就缠住医生，让医生告诉他什么时候能回家。