Trichlene
三氯乙烯
🗣️ 情景例句
There's a time for everything.
事情要一件一件地做。
Where did you go for dinner yesterday?
你们昨天去哪儿吃的饭？
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，