Clearly, there are environmental drawbacks from the use of coal as an energy resource, and these concerns are far too important to overlook. The massive reserves notwithstanding, coal is still a finite resource.
很明显，使用煤炭作为一种能源会产生环境倒退，而且人们不能忽视这些巨大的担忧。尽管储藏巨大，但是煤炭依旧是有限资源。因此，必须更为高效地开采煤炭并且顾及减少环境影响。