Libethenite
磷铜矿
🗣️ 情景例句
I wonder what the problem is.
我不知道发生了什么问题。
The President is going to address the nation on television this evening.
总统今晚将向全国发表电视讲话。
Yes, Mom! I'll do it right away.
听到了，妈妈！我这就去。