石油的短缺,油价的飙升,一直令世人担忧,更是石油进口国经济发展的瓶颈问题之一。而石油、煤炭的大量使用,带来的温室气体排放、地球逐渐变暖,生存环境日益恶化等问题,则是整个世界所面临的共同难题。 The shortage of oil and soaring oil prices have always caused the world’s concern. It is also one of the bottlenecks in the economic development of oil-importing countries. However, the large-scale use of oil and coal, the resulting greenhouse gas emissions, the gradual warming of the Earth and the deteriorating living environment are the common problems the entire world faces.