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我可以断言,一旦太阳能被广泛使用,我们人类所赖以生存的这个星球才不需要石油、煤炭、天然气等矿物燃料。那时,战争与灾祸就会远离我们人类,世界就会更加洁净。 有人指出,20世纪给我们人类留下的挑战是极其严峻的:遏制环境变化及其造成的不良后果:制止生物多样性的丧失:人口爆炸和粮食欠缺:移民潮:基因材料被垄断强占等。其中更应引起人们关注的是,矿物资源被大量消耗,不仅
I can assert that once the solar energy is widely used, the planet we humans depend on does not require fossil fuels like oil, coal, natural gas. At that time, the war and evil will be far away from our humanity and the world will be cleaner. It has been pointed out that the challenges left to humanity in the 20th century are extremely serious: deterring environmental change and its adverse consequences: stopping the loss of biodiversity: population explosion and food shortage: immigrant flows: the monopoly of genetic material and so on. Among them, more attention should be drawn to the fact that mineral resources are consumed in large quantities, not only