图片：1）场景复原，雕塑由泰勒·凯勒制作，原始图片由希梅娜·埃里克森（图像经邦尼·密尔渃修正）。2）威尔森等/公共科学图书馆生物学
Images: 1) Reconstruction of scene, Sculpture by Tyler Keillor and original photography by Ximena Erickson (image modified by Bonnie Miljour). 2) Wilson et al./PLoS Biology
人类的意识和审美观念以及审美活动的前形态原始形象符号活动都有其生物学的根据。
There are biological foundation for some factors, such as human consciousness, idea and formation of appreciation of the beautiful, original image, symbol and activity.
脊椎动物的起源是进化生物学研究的核心问题之一，目前人们普遍认为脊椎动物与无脊椎动物中的脊索动物起源于同一个原始祖先。
The origin of vertebrates has always been a core question in evolutionary biology. It is well accepted that vertebrates and invertebrate chordate derived from a common ancestor.
脊椎动物的起源是进化生物学研究的核心问题之一，目前人们普遍认为脊椎动物与无脊椎动物中的脊索动物起源于同一个原始祖先。
The origin of vertebrates has always been a core question in evolutionary biology. It is well accepted that vertebrates and invertebrate chordate derived from a common ancestor.
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