有趣吧——红是它唯一不吸收的颜色。
Funny that-because it's the only color the apple doesn't absorb.
透明生物的体内没有色素，因此它的细胞组织不吸收光线。
A transparent animal doesn't have pigments, so its tissues won't absorb light.
另一个让牛奶看起来呈乳白色的原因是因为牛奶中的一些物质不吸收光线。
Another reason milk looks white to our naked eyes is because some objects do not absorb very much light.
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