They are a necessary part of the diet of all higher animals.

它们是高等动物营养必不可少的部分.

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Most of the more complex emotions are common to the higher animals and ourselves.

大多数的比较复杂的情绪是各种高等动物和我们所共有的.

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Higher animals are evolved from lower animals.

高等动物是由低等动物进化而来的.

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Highly insoluble in normal digestive system conditions - safe to humans, higher animals, and most insects.

在正常消化系统状态下,毒素呈不溶状态,对人 、 高等动物和大多数昆虫安全.

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When transferred to an unnatural situation, such an animal is led assay by its instincts.

容易受环境的影响程度才是人和动物, 高等动物和低等动物的区别所在.

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