无烟煤的英文：
anthracite

Hard coal; anthracite
硬煤，无烟煤

Anthracite; hard coal
无烟煤;硬煤

We are required by environment protecting department to use anthracite.
环保部门要求我们使用无烟煤。

We are required by environment protecting department to use anthracite.
环保部门要求我们使用无烟煤。

Not until 1916 did the UMW finally win recognition from the anthracite operators
直到1916年，美国矿工联合会才终于得到无烟煤矿资方承认。