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(单词翻译:双击或拖选)
So you want to attract a mate. After all, passing on your genes1 is what evolution is all about. To do that you need offspring, and to get a lot of those you need to be attractive. The flashier the better. Hey, look over here! Sexy me. Ah, but there’s the problem. The flashier you are, the more likely you are to attract predators2. Hey, look over there–that guy really stands out. I’ll eat him. This is a pickle3. How can you be flashy in the eyes of mates but subdued4 in the eyes of predators? New studies show that swordtail fish have evolved a clever solution: use ultraviolet light. These innocuous little critters actually shine brightly in stripes that run along their flanks… but only if you look in the UV wavelength5.
1 genes | |
n.基因( gene的名词复数 ) | |
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2 predators | |
n.食肉动物( predator的名词复数 );奴役他人者(尤指在财务或性关系方面) | |
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3 pickle | |
n.腌汁,泡菜;v.腌,泡 | |
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4 subdued | |
adj. 屈服的,柔和的,减弱的 动词subdue的过去式和过去分词 | |
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5 wavelength | |
n.波长 | |
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