Lignitic
a. 褐煤的, 含褐煤的
🗣️ 情景例句
No, not yet. What about you?
不， 还没有。你呢？
No class!
真没水准！
Since its discovery, it has become a sort of potholers' Everest.
自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，