Polyformaldehyde
聚甲醛
🗣️ 情景例句
I'm writing an article on the feelings about graduation.
我在写一篇关于毕业感想的文章。
Here is a copy of itinerary we have worked out for you and your friends.Would you please have a look at it?
这是我们为你和你的朋友拟定的活动日程安排。请过目一下，好吗？
Yes, he'll be all right soon. I'm sure of that!
是的，他很快就没事了。我肯定！