Collophane
胶磷矿
🗣️ 情景例句
Hey, what did you do on your trip?
嗨，旅游时玩的怎么样？
Our first bill came yesterday, and we have some questions.
我们昨天收到的第一张帐单，有一些问题。
Well, we listened to lectures about pollution, agriculture, nuclear waste, radiation and so on.
噢，我们听取有关污染、农业、核废料、辐射等讲座。