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
I have just begun to learn and my serve isn't very good.
我刚刚开始学习，发球不太好。
Would you tell her Tom Gray Called?
请你告诉她汤姆i格雷来过电话，好吗？
If I work in the garden, I have to sit down and rest every five minutes.
如果我在花园里干活，每5分钟就得坐下来休息。