Polysulfone
[化] 聚砜; 聚砜类
🗣️ 情景例句
Are you good at taking photos?
你拍照拍得好吗？
Mother begins baking cookies two weeks before Christmas.
自圣诞节的两周以前，母亲就开始做小甜饼了。
No.Later, in a few weeks' time I'll put the little plants in the earth.
不止。几星期以后，我要把菜秧移到地里。