Wittichenite
脆硫铜铋矿, 硫铋铜矿
🗣️ 情景例句
What are you doing up this late?
这么晚了你还没睡在做什么？
It is a poor heart that never rejoices.
不知世间有乐者最可怜。
The man said that the pen was worth $50,
那人说那支笔值50英镑，