"They included skatole, a component of feces; trimethylamine, one of the essences of rotting fish; and several of the more pungent fatty acids that contribute to rancid human body odor, " Ed says.

“这包括粪臭素，一种粪便的要素；三甲胺，腐烂的鱼的要素中的一种；还有一种使人身体发出臭油脂味的刺激性较强的脂肪酸，”艾德说。

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Its lead author Ed Diener analyzed long-term studies of human subjects, experimental human trials, and studies that evaluate the health status of people stressed by natural events.

该文的首席作者埃德·迪纳对人类实验对象的长期研究，实验性的人体测试，评估受自然事件压迫人群的健康状况的研究进行了分析。

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The human rib cage. Source: Gray's Anatomy of the human Body, 20th Ed. 1918.

人肋骨笼子。来源：人体的灰色的解剖学，第20个编辑。1918年。

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However, the variable invariably overlooked by the imaginative and passionate ed-tech crowd is human nature itself.

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"You need management that is comfortable giving up some say, and let's face it, human nature isn't all programmed that way, " says Ed Lawler, a management professor and director of the Center for Effective Organizations at the University of Southern California's Marshall School of Business.

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"What Milton believed in was human liberty, and he took great joy in trying to promote that concept, " said Ed Crane, president of the Cato Institute.

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