人类是生物进化史上的顶峰，是最高级的动物，这是就人类的整体功能而言的。
In general, in the evolutional history of life, Human being is the most developed animal.
根据五年来的观察，在5487种已知的哺乳动物中，有1141个种群受到威胁，有188个被列入最高级别“濒危灭绝”的物种名单上。
At least 1, 141 of the 5, 487 known species of mammal are threatened, with 188 listed in the highest risk "critically endangered" category.
即便是最高级的灵长类动物，它们生命的复杂和丰富程度都远不及大部分人类的生命，因此他们值得我们去同情。
Even the higher primates - chimpanzees and so on - will have lives of far less complexity and richness than most human lives, and for this reason they deserve our pity.
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