Chalcomenite
蓝硒铜矿
🗣️ 情景例句
Which part of the paper do you read first?
你会先看报纸的哪一部分？
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
I joined in the march and we were marching peacefully along and then the police came up.
我参加了游行，我们以和平的方式往前行进，这时警察突然来了。