熟悉的形状和任何凹凸不平这是正常的你。

Get familiar with the shape and any lumpiness that is normal for you.

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记下房间的不规则大小和形状，比正常损耗在悬挂之间，或者其他特殊情况下所消耗的数目都要大。

Note that rooms of unusual size or shape, greater than normal wastage during hanging, or other special circumstances may affect the amount needed.

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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。

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

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