War may be a natural expression of biological instincts and drives toward aggression in the human species.

在人类物种中，战争可能是生物本能和侵略冲动的自然表现。

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Trust is one of the basic problems of human society; it refracts the social individuals' basic faiths to the natural instincts.

信任问题是人类社会的基本问题之一，它折射出社会个体对于人类本性的基本信念。

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Longing for the happiness of life is natural instincts and rights of human being.

渴望生命的快乐，是人的天性和权利。

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The idea is to use the natural human instincts of playing and learning to familiarize patients with their illness and to help them to better monitor and treat it.

FORBES: Gaming Your Way To Better Health