In recent years, the global use of coal has also surpassed oil.
近些年，全球煤炭的使用量也已经超过了石油。
He became ill after breathing in a lot of coal dust for many years.
多年来他吸入了大量煤尘，后来他得了病。
Coal bed methane is a new kind of energy emerging in the past 20 years.
煤层气是近二十年崛起的一种新能源。
The development of Coal bed Methane (CBM) has made greater progress in recent years.
近年来，煤层气开发取得了较大进展。
The development of Coal bed Methane (CBM) has made greater progress in recent years.
近年来，煤层气开发取得了较大进展。
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