Polydimethylsiloxane
聚二甲硅氧烷; 聚二甲硅氧烷
🗣️ 情景例句
Let me see your driver's license.
给我看一下你的驾驶执照。
No matter what comes up, don't sound nervous.
不论发生什么事情，你也不要显得紧张。
It was very old and precious even then.
却使在当时，它也属历史悠久的珍奇之物。