Preconcentrator
[化] 预浓缩器
🗣️ 情景例句
Don't treat me as an idiot.
别把我当傻瓜。
Speaking of trips,did I ever tell you about the experience I had?
谈论旅行,我曾经把我的经验告诉你了吗？
The French authorities had the plane packaged and moved in parts back to France.
法国政府让人把飞机包装起来，一部分一部分地搬回法国。