Polysulfone
[化] 聚砜; 聚砜类
🗣️ 情景例句
Good night, Harry. It was nice meeting you. Harry
很高兴与你见面。
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
My wife was wearing a hat that looked like a lighthouse!
我妻子戴着一顶像灯塔一样的帽子。