Diffusion (vacuum)pump
[化] 扩散泵; 扩散真空泵
🧩 词语组成解析
🗣️ 情景例句
He's like a little doll.
他像个小洋娃娃。
If you wouldn't mind, I could use a hand.
如果你不介意的话，我可能要你帮个忙。
I' d like to study medicine and become a doctor.
我想学医，当个医生。