Chalcocitization
辉铜矿化(作用)
🗣️ 情景例句
Great. What's happening with you these days?
非常好。你最近几天怎么样？
How have you been?
你过的还好吗？
becomes so worn and unreliable that it eventually is not worth mending.
磨损太厉害，老得一点儿也不准了，最终会不值得修理了。