【英语时差8,16】伪装大师—乌贼（上）

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.

1 camouflage   

n./v.掩饰，伪装

参考例句：

• The white fur of the polar bear is a natural camouflage.北极熊身上的白色的浓密软毛是一种天然的伪装。
• The animal's markings provide effective camouflage.这种动物身上的斑纹是很有效的伪装。

2 cuttlefish   

n.乌贼，墨鱼

参考例句：

• I have no idea about how to prepare those cuttlefish and lobsters.我对如何烹调那些乌贼和龙虾毫无概念。
• The cuttlefish spurts out dark ink when it is in danger.乌鲗遇到危险的时候会喷出黑色液体。

3 octopuses   

章鱼( octopus的名词复数 )

参考例句：

• Snails and octopuses are molluscs. 蜗牛和章鱼是软体动物。
• Limpets, snails and octopuses are mollusks. 帽贝、蜗牛和章鱼都是软体动物。

4 pigment   

n.天然色素，干粉颜料

参考例句：

• The Romans used natural pigments on their fabrics and walls.古罗马人在织物和墙壁上使用天然颜料。
• Who thought he might know what the skin pigment phenomenon meant.他自认为可能知道皮肤色素出现这种现象到底是怎么回事。

5 cone   

n.圆锥体，圆锥形东西，球果

参考例句：

• Saw-dust piled up in a great cone.锯屑堆积如山。
• The police have sectioned off part of the road with traffic cone.警察用锥形路标把部分路面分隔开来。

6 differentiate   

vi.(between)区分；vt.区别；使不同

参考例句：

• You can differentiate between the houses by the shape of their chimneys.你可以凭借烟囱形状的不同来区分这两幢房子。
• He never learned to differentiate between good and evil.他从未学会分辨善恶。

7 marine   

adj.海的；海生的；航海的；海事的；n.水兵

参考例句：

• Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
• When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。