Silicones
[化] 有机硅氧聚合物
🗣️ 情景例句
OK. Do you know when you'll come and visit?
好啊。你知道几时还会再来拜访我们吗？
He is wise that knows when he's well enough.
知足的人是聪明的人。
That doesn't sound like modern printing.
这听起来不象是现代印刷术呀。