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全世界能源消耗近百年来增长非常快,现在一年的消耗量为0.25库(1库=300×10~(12)千瓦小时),而且还以每年5～6％的速度在增长。石油仅仅开采了120年,如今已所剩有限了。石油的枯竭导致了对煤的需求,许多专家估计煤在世界贸易中将比过去20年有显著的
Energy consumption in the world has been growing very fast in the last hundred years. Today, the consumption of one year is 0.25 (1 library = 300 × 10-12 kilowatt hours) and is growing at a rate of 5-6% annually. Oil has only been mined for 120 years and now there is a limit. The depletion of oil has led to a demand for coal, and many experts estimate that coal will have significantly more in world trade than in the past two decades