Chemex
化学交换(同位素浓缩)过程
🗣️ 情景例句
Thank you. I appreciate your help.
谢谢！很感谢你的帮助。
In moderating, not satisfying, desires, lies peace.
节欲不纵情，心情得安宁。
He gets into the lift. It takes him down to the first floor.
他进入电梯。他乘电梯下到1楼。