Epoxybutane
氧化丁烯
🗣️ 情景例句
Speaking of mother and of father
谈到孩子的爸， 孩子的妈，
I'm sorry I'm late. I overslept again.
抱歉我来晚了。我又睡过头了。
If it were severe, they all fell.
如果地震剧烈，所有的木棒都会倒下。