Polysulfone
[化] 聚砜; 聚砜类
🗣️ 情景例句
I have a daughter.
我有一个女儿。
Can you guess what I was doing this morning?
你能猜到今天上午我在做什么吗？
Fine, thanks, Dad. What about you?
很好，谢谢爸爸。你呢？