Chemex
化学交换(同位素浓缩)过程
🗣️ 情景例句
How about the price list? Does it have a guarantee to go with it?
价格表呢？有没有附保证书呢？
If you dance you must pay the fiddler.
要想寻欢作乐，代价非付不可。
I'm a farmer.
我是一个农民。