形容詞 bituminous:

1. resembling or containing bitumen

1. The destructive distillation of bituminous coal, done in the absence of air in order to obtain coke and other fractions having a greater percentage of carbon than the original material.
   碳化作用煙煤的分解蒸餾，在沒有空氣的條件下進行，為得到比最初的原料所含碳的百分比大得多的焦煤以及其它餾分
2. What can we do with the bituminous coal?
   這些煙煤可以用來做什么？

bi.tu.mi.nous

adj.（形容詞）
Like or containing bitumen.
瀝青的，含瀝青的
Of or relating to bituminous coal.
煙煤的：煙煤的或與煙煤有關的