Polysulfone
[化] 聚砜; 聚砜类
🗣️ 情景例句
There's your sleeping bag.
这是你们的睡袋。
No man is wise at all times.
智者千虑，必有一失。
The American president who fought for the freedom of slaves in the USA.
为美国奴隶的自由而战的美国总统。