Anthracitization
无烟煤化作用
🗣️ 情景例句
He'll be grouchy.
他会发牢骚的。
My brother wants to learn how to fly a plane.
我的兄弟要去学开飞机。
We had spent several days in a small town and visited a number of old churches in the vicinity.
我们在一座小镇上逗留了几天，参观了附近的许多古老的教堂。