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Natural gas is a versatile fuel that can support renewable energy growth by providing reliability when the sun isn't shining and the wind isn't blowing.
如果你发现自己身处一艘不断漏水的船里,换一艘船所需的能量可能比填补漏洞所需的能量更有效率。
合作是艺术中的一种慷慨形式。