Polyalkane
聚链烷
🗣️ 情景例句
And give her a teaspoon of the medicine after every meal.
每餐之后给她吃一茶匙的药。
Where have you been all this time?
这段时间你跑到哪里去了？
I have had several conversations with him.
我已经和他谈过几次了。