Molozonide
分子臭氧化物
🗣️ 情景例句
I wish Robbie and Alexandra had come to this meeting.
我真希望Robbie和Alexandra已经来参加开会。
He established a new business.
他开创了新事业。
How would you go to Beijing, by air or by train?
你怎样去北京，是乘飞机还是坐火车？