Sumitex
脲甲醛聚合物
🗣️ 情景例句
As long as my position here allows me to learn.
只要我的职位允许我学习。
I think it's going to be too hot.
我认为天气将会太热。
No,you mustn't eat anything until you see the doctor.
不行，看医生之前你不可以吃任何东西。