Picrochromite
镁铬矿
🗣️ 情景例句
The pleasure is mine.
认识你是我的荣幸。
My mother mailed me a parcel.
我妈给我寄了一个包裹。
Of course, everyone began to shout very loudly.
当然，每一个人都开始大声地喊叫。