Polysulfones
[化] 聚砜; 聚砜类
🗣️ 情景例句
without cultural programs in our school.
我们的学校里没有文化活动。
In the deepest water is the best fishing.
绝处能逢生。
The landlord smiled and immediately went out.
酒店老板笑了笑，马上走了出去。