Toluenediamine
甲苯二胺
🗣️ 情景例句
the school poster for the play this year.
今年学校话剧的海报。
Let's celebrate!
让我们好好庆祝一下吧!
This decline in vigour with the passing of time is called ageing.
生命力随时间的流失而衰退叫做衰老。