The tariffs are a second blow for countries exporting coal to China, after an ban on selling or transporting low-gradecoal.
对于向中国出口煤炭的国家来说，这些关税是第二次打击。此前中国宣布禁止销售或运输低等级煤炭。
2
Brown coal: a low-gradecoal which commonly retains the structures of the original wood. It is high in moisture, low in heat value and checks Badly upon drying.
褐煤：一种低质煤，往往保存着原来的木质结构，高水分，低热值，干燥后龟裂严重。
3
German reunification in 1990 saddled the country with East Germany's low-grade brown coal plants, the dirtiest in Europe.