Polydialkysiloxane
聚二烷基硅氧烷
🗣️ 情景例句
What's all the cheering about?
这么高兴是为什么？
I think I happen to represent them in accepting this award.
而我是碰巧来代表他们接受这个奖的。
Don't give me your attitude.
别跟我摆架子。