Chalcocitization
辉铜矿化(作用)
🗣️ 情景例句
Well, there must be something.
嗯 ，一定可以找到事做。
Is it convenient to you if I come at 6 p.m.?
如果我下午6点来拜访你，方便吗？
It was no use pretending that I had not seen him, so I waved to him.
若再装作没看见他已是没有用了，我只好向他招手。