Polydiene
聚二烯
🗣️ 情景例句
It'll be like old times for you and me.
你我过去的美好时光又会重现。
We don't have an extension.
我们没有分机。
It is almost always due to some very special circumstances that traces of land animals survive,
几乎总是由于某些特殊的条件，陆地动物的遗体才被存下来，