Naumannite
硒银矿
🗣️ 情景例句
So now I'm taking a flight on Monday instead.
所以我现在要改搭星期一的班机走。
People are always changing, aren't they?
人总是在变，不是吗？
Really? I thought you were from the States.
真的吗？我还以为你是美国人呢。