Sometime between 2020 and 2050 the world's fertility rate will fall below the global replacement rate.

世界人口生育率将在2020至2050年期间降至世界生育替代率水平以下。

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By about 2020, the global fertility rate will dip below the global replacement rate for the first time.

到2020年左右，全球生育率将第一次低于全球生育等值替换水平。

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As one of Earth's great carbon sinks, the replacement of Amazon jungles with savannah or forest would drastically accelerate global warming.

作为地球上最大的碳储存库，亚马逊丛林被草原或森林替代之后将大幅加速全球变暖的过程。

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In fact, it is now positioned as a solution to global climate change as a replacement for fossil fuel based energy (burning coal or natural gas).

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One alternative you could consider amid the global uncertainty is a stock-replacement strategy, where you sell stocks that you like and buy in-the-money or longer-dated call options on those same equities.

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If all women had this ability, survey data shows, average global childbearing would immediately fall below the 'replacement fertility' value of slightly more than two children per woman.

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