Tribromophenyl
三溴苯酯
🗣️ 情景例句
I need to be in the top percentage of my class to study abroad.
为出国留学，我的成绩必须在班里名列前茅。
He didn't visit this country on the tour.
他在旅行中不拟访问这个国家。
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？