Teroxide
三氧化物
🗣️ 情景例句
I can't figure him out-he's a mystery!
我不能理解他，他真是个迷。
He must have been an outstanding student.
他一定是个优秀学生。
This is Miss Sophie Dupont.Sophie is a new student.She is French.
这位是索菲娅。杜邦小姐。索菲娅是个新学生。她是法国人。