Vision, for example, is made possible in part by rhodopsin, a pigment molecule that is extremely sensitive to light.
例如，视觉部分通过一种对光极度敏感的色素分子视紫质来实现。
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The protein encoded by the gene helps convert vitamin a into a form used by the retina's light-sensing cells (rods and cones) to make rhodopsin, a pigment that absorbs light.