youdao

Coal is the filthiest fossil fuel and is cheap only because its dirtiness isn't included in the bill.

煤炭是污染最严重的化石燃料且因为它对环境的负外部性使其价格便宜。

youdao

While this might not be considered the filthiest habit by some, it should be considered the deadliest.

虽然吸烟对有些人来说不是最肮脏的习惯，但应该是最致命的。

youdao

Coal is the filthiest fossil fuel and is cheap only because its dirtiness isn't included in the bill.

ECONOMIST: What is good news for miners is bad news for the environment

Yet, at the moment, governments have got things exactly backwards: they subsidise the filthiest fuel and put roadblocks in the way of the cleanest.

ECONOMIST: Burning issue

"The S.S. Badger, the filthiest ship on the Great Lakes, has been given two more years to dump hundreds of tons of dangerous coal ash into Lake Michigan, " Durbin said in a statement.

NPR: Deal Requires Ferry To Stop Ash Dumping In 2 Years