Polydimethylsiloxane
聚二甲硅氧烷; 聚二甲硅氧烷
🗣️ 情景例句
I graduated from Nanjing University.
我从南京大学毕业的。
Happiness takes no account of time.
幸福不觉光阴过。
This is to help you start your school.
这是帮助你开办学校用的。