Trichalcite
丝砷铜矿
🗣️ 情景例句
They don't ask how much someone paid for something.
他们不问别人买某个东西要花多少钱。
Without method, little can be done to any good purpose.
不讲究方法，办事就没有成效。
Yes, it's beautiful, isn't it?
是的，今天的天气真好！