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(单词翻译)
Clever cephalopods and colorblind camouflage1 champions—cuttlefish2! Cuttlefish are cephalopods, relatives of squid and octopuses3, and are masters of camouflage. Using unique skin pigment4 cells, cuttlefish can rapidly change their skin color and pattern to blend in with the background. Amazingly, they do this despite being totally colorblind! Color-sensing cells in the retinas of cuttlefish eyes are composed of only one type of cone5 cell. Humans have three different types, each sensitive to a different color of light. With only one cone type, you couldn’t differentiate6 between different colors. Using night-vision video, scientists at Woods Hole Marine7 Lab also discovered that cuttlefish even match their background at night, when there isn’t enough light for color vision. This suggests that it isn’t necessary for the cuttlefish to see colors in order to match them.
收听单词发音
1
camouflage
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| n./v.掩饰,伪装 | |
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2
cuttlefish
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| n.乌贼,墨鱼 | |
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3
octopuses
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| 章鱼( octopus的名词复数 ) | |
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4
pigment
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| n.天然色素,干粉颜料 | |
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cone
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| n.圆锥体,圆锥形东西,球果 | |
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6
differentiate
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| vi.(between)区分;vt.区别;使不同 | |
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7
marine
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| adj.海的;海生的;航海的;海事的;n.水兵 | |
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