Wittichenite
脆硫铜铋矿, 硫铋铜矿
🗣️ 情景例句
A credit card is very useful when you go traveling.
当然旅游的时候，信用卡很有用。
To really understand a man we must judge him in misfortune.
要真正了解一个人，需在不幸中考察他。
He always talks big.
他总是吹牛。