1.Coal used to be thought of as a cheap form of energy since it is so readily available, but it is no longer really true in wider economic terms.

煤炭曾经被认为是一种廉价的能源，因为它轻易就能得到，但是从更广义的经济角度来讲现在情况已经不是这样了tQZSyCevV&9~tIL~X。

2.Coal has enabled China to greatly improve its economic situation, but its contamination of the atmosphere has caused health problems in the population and poisoned much farmland,

煤炭使中国的经济状况大为改观，但是煤炭所造成的大气污染给人们带来了健康问题，还污染了很多农田Yps+%,kF&BO^AWplY。

3.The modernization of technology, systems and lifestyles that coal has enabled now puts us in a position to seriously invest in alternative energies like wind, wave,and solar power．

煤炭带来的技术、体制和生活方式的现代化使我们得以大力投资风能、潮汐能和太阳能等替代能源~GFoCt),PRK。