Dialozite
菱锰矿
🗣️ 情景例句
Thank you, sir.
谢谢您，先生。
I'll meet you tomorrow.
我们明天见面。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。