Monochlorination
一氯化作用
🗣️ 情景例句
you spend with Dad and me ... and the family.
你和父亲， 我及全家人共度的。
You cannot have two forenoons in the same day.
一日之中不可能有两个上午。
Quick, turn the gas off. Cover the pan. Be careful!
快，把煤气关上。盖上锅。小心！