Energy is an essential material basis for human survival and development. Over the entire history of mankind, each and every significant step in the progress of human civilization has been accompanied by energy innovations and substitutions. The development and utilization of energy has enormously boosted the development of the world economy and human society.能源是人类社会赖以生存和发展的重要物质基础。纵观人类社会发展的历史，人类文明的每一次重大进步都伴随着能源的改进和更替。能源的开发利用极大地推进了世界经济和人类社会的发展。