Polydimethylsiloxane
聚二甲硅氧烷; 聚二甲硅氧烷
🗣️ 情景例句
Dinner's on me.
晚饭我请客。
I agree. I wish it were quicker.
是这样，我希望它能快一点。
It usually comes in September or October.
中秋节通常在9月或10月份。