Cannel coal is dull black.烛煤呈暗黑色.There are intermediate varieties known as cannel coal.有一些中间性的变种,叫做烛煤.He travelled from New York to California via the Panama Cannel.他经由巴拿马运河从纽约到加利福尼亚....
There are intermediate varieties known as cannel coal.有一些中间性的变种,叫做烛煤.He travelled from New York to California via the Panama Cannel.他经由巴拿马运河从纽约到加利福尼亚.Resinite is a rich n 1 aceral in Teriary humic coal, boghead - cannel ...