Dioxirane
n. [化]双环氧乙烷
🗣️ 情景例句
Ask Paul Smith to fill in for me.
叫Paul Smith代替我出席。
Where were you on Tuesday?
星期二你在哪里？
that people have for years assumed that the process of losing vigour with time,
多年来就已认识到。生命力随着时间流失而丧失活力，