Khlopinite
钛铌铁钇矿
🗣️ 情景例句
I don't know.
我不知道。
You're very kind to take the trouble to help me.
谢谢你不怕麻烦帮助我。
I'm usually just using the search engines to look up information.
我通常只是用搜索引擎找一些资料。