所以尽管描述性的研究报告表明休假对生产效率和健康的益处颇多，但一个长的假期对于美国雇员而言是不受欢迎的，他们会觉得不放心，觉得不切实际，甚至觉得是不可能的。

So despite research documenting the health and productivity benefits of taking time off, a long vacation can be undesirable, scary, unrealistic or just plain impossible for many U.S. workers.

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研究者称这些区别可能基于进化过程，女性偏爱略带红色的颜色，并且跟长熟的水果和健康的脸色联系起来。

Researchers said these differences may have a basis in evolution in which females developed a preference for reddish colors associated with riper fruitand healthier faces。

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研究者称这些区别可能基于进化过程，女性偏爱略带红色的颜色，并且跟长熟的水果和健康的脸色联系起来。

Researchers said these differences may have a basis in evolution in which females developed a preference for reddish colors associated with riper fruitand healthier faces。

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