Rods and cones detect light, darkness, shape and colour, and make normal sight possible.

其中柱体和锥体感受器可以感受光亮与黑暗，形状与颜色，形成正常的视觉功能。

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That was the softly running water beneath, hidden from sight, its colour invisible, though the leaves looked more graceful than ever.

叶子底下是脉脉的流水，遮住了，不能见一些色彩； 而叶子却更见风致了。

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