Polysulfones
[化] 聚砜; 聚砜类
🗣️ 情景例句
Let me try it on.
让我试试看。
She began playing the violin when she was nine.
她从九岁就开始练习小提琴。
He came out of the library, a large book under his arm.
他夹着本厚书，走出了图书馆。