例如，昆虫能够看到极光——光对它们来讲会根据从不同的表面反射的不同角度而显现出不同的颜色。
For example, insects can see polarised light - light to them appears as different colours, depending on the Angle at which reflects off different surfaces.
漫射光色反射从一个方向来的光，因此对于径直照射的表面来说就比仅是光线斜射过的表面更为明亮。
Diffuse color reflects light that comes from one direction, so it's brighter if it comes squarely down on a surface that if it barely glances off the surface.
新月抱旧月“只不过就是月球表面上正处于黑夜的那一部分被地球的反射光反照的结果。”
"The old moon in the new moon's arms" is nothing but that part of the moon's surface on which it is night, lighted up by earth light.
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