Polysulfones
[化] 聚砜; 聚砜类
🗣️ 情景例句
I wonder if you could tell me.
不知你是否能告诉我。
Will it never end?
没完没了。
It is ten o'clock.Mrs.Sawyer usually stays at home in the morning, but this morning, she is going to the shops.
现在是10点钟。上午，索耶夫人通常是呆在家里的，但今天上午，她正去商店买东西。