Vanthoffite
[矿]无水钠镁钒
🗣️ 情景例句
I hope your daughter is all right. Good-bye.
我希望你女儿安然无恙。再见。
Who is he?
他是谁？
I know. I can help him with most of his subjects.
我知道。我可以帮助他学习绝大多数科目。