Tribromated
三溴化的
🗣️ 情景例句
The course I took was above me.
我上的这门课太难了。
If it's not too much trouble, I would like some help.
如果你不嫌麻烦的话，我想请你帮个忙。
That's not allowed. Once you are in here, listen to your teacher.
那是不允许的。一旦进来了，你们要听老师的话。