Iec
[化] 离子交换色谱法
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
I'm sorry, but I didn't understand your question. Could you please restate it?
对不起，你的问题我没有理解，请你再说一遍好吗？
Yes, it is. Hi, Jim!
是的，我是。你好，吉姆！