有一种进化理论认为，流泪可能被演化为一个有价值的信号，因为它只能让实际上最靠近我们的人可以看到我们在流泪。
One theory is that crying may have evolved as a kind of signal — a signal that was valuable because it could only be picked up by those closest to us who could actually see our tears.
这个发现奠定了语言进化中所谓的手势理论。 这个理论的拥护者主张，语言在成为一种发声的表达方式之前是由手势表达系统演化而来的。
This finding bolsters the so-called gestural theory of language evolution, whose proponents argue that language evolved initially as a gesture system before becoming vocal.
企业进化理论是在生物进化学说、组织生态学和演化经济学等理论的基础上所逐渐形成的一种新型企业理论。
Evolutionary theory of enterprises is a new kind of theory based on biological evolutionary theory, organizational ecology and evolutionary theory of economics, etc.
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