The Chinese macroeconomic fluctuations from 2006 to 2008 provide good natural experiments for empirical capital structure research.

中国宏观经济2006 ~ 2008年的波动为资本结构自然实验法研究提供了条件。

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But perhaps imperialists can. Maybe the colonial adventures of the past provide the natural experiments economists need to put their theories to the test.

然而帝国主义者也许就能做到，也许以前的那些殖民冒险者们就已经为经济学家们提供了一些活生生的实例，而经济学家们需要做的只是用他们的理论去验证这些实例。

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That means investigating such "natural experiments" in Earth's history is crucial, Macdonald said. "That's going to tell us a lot more than any little [computer] model can say."

Macdonald说到，这一切向我们揭示了对地球演变史中的“自然实验”做研究是非常重要的，这远比我们用电脑模拟得出来的数据更加有意义。

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The Megaupload case shows how natural experiments can arise, and how they are limited.

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This tallies with the outcome of natural experiments in recent history, such as the influx of 610, 000 Russian Jews into Israel in the early 1990s, the return of 900, 000 Frenchmen from Algeria in 1962 or the homecoming of 600, 000 Portuguese after the collapse of their empire in Africa in 1974-76.

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Now to help facilitate the growth of robot scientists for routine, automated experiment, King and his team are urging that the methods and processes of science be formalized, to remove the ambiguities of natural language and make it easier to reproduce experiments and build the bases of knowledge.

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