Bementite
蜡硅锰矿
🗣️ 情景例句
Crossing the Luohu border is a nightmare on holidays and weekends.
节日或者周未过后边毕业班检查站简直就是场恶梦。
Do I look dirty?
我的样子很肮脏吗？
Oh, that's not necessary.
啊，不必这样。