求翻译：当前，以煤炭、石油作为主要燃料的国家，已面临严重的环境污染，加上石化燃料有限储量减少的双重危机日益加深，开发利用新能源已经成为世界能源可持续发展战略的重要组成部分，是什么意思？

At present, coal, fuel oil as the main countries, already facing serious environmental pollution, coupled with the limited reserves of fossil fuels to reduce the double crisis deepening, development and utilization of new energy sources has become the world's energy strategy for sustainable developm

At present, the coal, oil as a major fuel, the country has been facing serious pollution of the environment of the limited fossil fuel reserves, coupled with the dual crisis deepening, development and utilization of new energy has become one of the world's energy for sustainable development an impor

Presently, by the coal, the petroleum took the main fuel the country, faced with the serious environmental pollution, in addition petrified the dual crises which the fuel limited reserves reduces to deepen day by day, the development used the new energy already to become the world energy sustainable

At present, coal and oil as fuel for the main countries, already facing serious environmental pollution, coupled with the limited fossil fuel reserves to reduce the double crisis deepens, development and utilization of new energy sources has become the world's important part of sustainable energy de