一些具有差异化的表现形式但对功能影响不大的特征- - -比如头盖骨的形状，在进化过程中可能起着比自然选择更重要的作用。

With features that can vary somewhat in form without greatly affecting function, such as the shape of the skull, chance might play a bigger role in their evolution than natural selection.

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我宁愿选择品质销售或其它差异化销售路线。

I prefer to sell on quality or other differentials.

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在旅游景点的选择上，体现以山水风光为主，海滨沙滩等景点爱好并存的需求差异化特点；

As for the selection of tour destination, diverse tour demand appears, such as landscape, seashore, sand beach and so on.

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