我们倾向于假设动植物的所有特征都是自然选择的结果。
We tend to assume that all characteristics of plants and animals are adaptations that have arisen through natural selection.
质朴化住区环境设计的本质特征是让人感悟阳光、、、地和动植物的美。
Its essential characteristics is to let people feel the beauty of sunlight, wind, water, land and animals and plants.
动植物的其他特征，如鸵鸟的翅膀，一旦适应了，可能就不再需要用于原来的目的。
Other features of plants and animals, such as the wings of ostriches, may once have been adaptations but are no longer needed for their original purpose.
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