Authors use graphic aids to illustrate and expand on concepts taken up in the text because graphics are yet another way of portraying relationships and clarifying connections.

作者使用图形辅助来说明和扩展文本中的概念，因为图形是描述关系和阐明联系的另一种方式。

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There is no agreement on the relationships of the neuralian opsin subfamilies, and clarifying their phylogeny is key to elucidating the origin of this protein family and of vision.

视觉的遗传起源仍然不清楚，这部分是由于对最早拥有视蛋白的后生动物之间的系统发生学关系的报告的不一致。

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There is no agreement on the relationships of the neuralian opsin subfamilies, and clarifying their phylogeny is key to elucidating the origin of this protein family and of vision.

视觉的遗传起源仍然不清楚，这部分是由于对最早拥有视蛋白的后生动物之间的系统发生学关系的报告的不一致。

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