Polysulfones
[化] 聚砜; 聚砜类
🗣️ 情景例句
Malcolm. Malcolm
。
A bad custom is like a good cake, better broken than kept.
坏习惯像鲜馅饼，分食要比保存好。
Football is a very popular game in China. Many young people like it.
足球在中国是一项很受欢迎的运动。许多年轻人喜欢足球。