Polydimethylsiloxane
聚二甲硅氧烷; 聚二甲硅氧烷
🗣️ 情景例句
How I envy you.
我真是羡慕你。
I learned geography last week.
我上星期学地理。
Look at his big teeth. Isn't he bigger than you?
瞧他的大牙齿。他的块头不是比你大吗？