Interpolymerization
共聚作用
🗣️ 情景例句
Please accept my sincere apology.
请接受我诚心诚意的道歉。
How much is a call to the United states?
打一个电话到美国去需要多少钱？
No, thank you. Tom.I've already had lunch.
不，汤姆，谢谢。我已经吃过饭了。