Kellerite
铜镁矾
🗣️ 情景例句
Let's talk.
我们谈谈吧。
I'm sorry, but I didn't understand your question. Could you please restate it?
对不起，你的问题我没有理解，请你再说一遍好吗？
Is there a ball under the table?
桌子上有一只球吗？