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The weight of evidence for an extraordinary claim must be proportioned to its strangeness.
可持续性不是一种选择,而是我们星球未来的必需品。
旅行的用途是用现实来调节想象力,而不是想象事情可能是怎样的,而是看到它们实际是怎样的。
The only limits in life are the ones you set for yourself.
Coal is not just a commodity, it's a commitment to America's future.