Melanocerite
[矿]黑稀土矿
🗣️ 情景例句
I was here too, but I didn't get to know you. I'm John.
我也出席了，但没有机会结识你。我叫约翰。
Do you often doubt yourself?
你时常怀疑自己吗？
He has a son and a daughter.
他有一个儿子和一个女儿。