Erdmannite
复硅锆钡矿
🗣️ 情景例句
and I promised to have lunch with both of them today.
我答应今天和他们共进午餐。
Don't mention it. I hope you can come again soon.
不用谢，希望你不久能再来。
You remember my friend who helped me out?
你还记得曾经帮助我摆脱困境的那位朋友吗？