本世纪头七十年间,人类对能源的耗用已经增加了十倍以上。假定在今后能源需求每年增长5%,到本世纪末在燃料开采与需求之间,每天将出现3.2×10~6米~3石油当量的差距。专家们预测,届时所有可供选择的能源,包括水力、风力、潮汐、地热、沼气、太阳能等,都不足以填补这一差距。除 During the first seventy years of this century, human consumption of energy has increased tenfold or more. Assuming that energy demand will increase by 5% annually in the future, there will be a gap of 3.2 × 10 ~ 6m ~ 3 oil equivalent per day between fuel production and demand by the end of this century. Experts predict that by then all options for energy, including water, wind, tides, geothermal, biogas, solar energy, are not enough to fill this gap. except