Polysulfone
[化] 聚砜; 聚砜类
🗣️ 情景例句
We cannot leave this problem unattended.
这一问题我们不能置之不理。
And our successful techniques, and to speak about our failures.
和成功技巧，并讲出我们的失败之处。
What's it about?
它是讲什么的？