他认为，这是我们人类可以解决能源问题的唯一方法—太阳在一小时中通过光线倾泻到地球的能量，可以满足我们这个星球整整一年的能源需求。
That, he figures, is the only way we humans can solve our energy problems; enough energy pours down from the sun in one hour to power the planet's energy needs for a year.
吉萨大金字塔以及狮身人面像在2009年的地球一小时活动中熄灯变暗，其他世界性的地标建筑物如雅典卫城、艾菲尔铁塔和旧金山金门大桥都加入了熄灯行列。
The Great Pyramids of Giza, sphinx included, joined world landmarks such as the Athens Acropolis, the Eiffel Tower, and San Francisco's Golden Gate Bridge in going dark for Earth Hour 2009.
报告中提到由世界野生动物基金会发起的很受欢迎的活动“地球一小时”，还盛赞了另一个私人组织能源基金会所作的贡献。
The report mentions favorably “Earth Hour,” a project by the World Wildlife Fund, and praises the work of another private organization, the Energy Foundation.
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