Humans are pretty good at seeing reds, blues, and yellows, but for animals ranging from bees to reindeer, ultraviolet lights up their vision.

人眼善于分辨红色，蓝色和黄色，但是对于蜜蜂和驯鹿之类的动物来说，紫外线却能让他们看得更清楚。

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During the final stage, the water is disinfected - by the addition of chlorine, hydrogen peroxide and other chemicals and by running it past ultraviolet lights.

在最后一个步骤中，水经过氯、过氧化氢和其它化学品消毒，并且经过紫外线灯消毒。

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The zoo said raising the abandoned iguanas was proving costly because of the expensive ultraviolet lights needed by the reptile and because of their healthy appetites.

动物园说，养护这些被遗弃的鬣蜥证明是代价高昂的，因为它们匍匐休息时需要昂贵的紫外线，而且它们胃口又挺大。

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