Interradium
间辐区
🗣️ 情景例句
She is a fantastic swimmer.
她游泳游得非常好。
I'm sorry I forgot your birthday, it completely slipped my mind.
我很抱歉忘了你的生日，我完全不记得了。
The question was, which one?
问题是，哪一种气体导致火灾呢？