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.

煤炭曾經被認為是一種廉價的能源，因為它輕易就能得到，但是從更廣義的經濟角度來講現在情況已經不是這樣了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,

煤炭使中國的經濟狀況大為改觀，但是煤炭所造成的大氣污染給人們帶來了健康問題，還污染了很多農田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．

煤炭帶來的技術、體制和生活方式的現代化使我們得以大力投資風能、潮汐能和太陽能等替代能源~GFoCt),PRK。