时间:2018-12-24 作者:英语课 分类:Scientific American(二)月


英语课

Bring home a bucket of fried chicken and you may find that people have strong feelings about which part of the bird is best. Well, scientists at Washington University in St. Louis say the answer is: the eyes. At least when you compare them to our own ocular implements 1. Because chickens can see more colors than we do, findings that appear in the journal Public Library of Science ONE.


 


The ability to see colors comes from specialized 2 light-sensing cells found in the retina. These cells, called cones 4, come in different flavors, each of which can detect different wavelengths 5 of light. Humans have three kinds of cones that allow us to see red, green and blue. But birds have an extra cone 3 for seeing violet and ultraviolet light. What’s more, these chicken cones are distributed evenly throughout the retina, enhancing the birds’ ability to see colors all around their visual field.


 


Woodpeckers, sparrows and pigeons have a similar setup in the retina department, which presumably gives them an advantage when it comes to finding mates or spotting brightly colored berries. It may also explain why the chicken crossed the road. If you could see what he does, maybe you’d head over there, too.


 



1 implements
n.工具( implement的名词复数 );家具;手段;[法律]履行(契约等)v.实现( implement的第三人称单数 );执行;贯彻;使生效
  • Primitive man hunted wild animals with crude stone implements. 原始社会的人用粗糙的石器猎取野兽。 来自《现代汉英综合大词典》
  • They ordered quantities of farm implements. 他们订购了大量农具。 来自《现代汉英综合大词典》
2 specialized
adj.专门的,专业化的
  • There are many specialized agencies in the United Nations.联合国有许多专门机构。
  • These tools are very specialized.这些是专用工具。
3 cone
n.圆锥体,圆锥形东西,球果
  • 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。
4 cones
n.(人眼)圆锥细胞;圆锥体( cone的名词复数 );球果;圆锥形东西;(盛冰淇淋的)锥形蛋卷筒
  • In the pines squirrels commonly chew off and drop entire cones. 松树上的松鼠通常咬掉和弄落整个球果。 来自辞典例句
  • Many children would rather eat ice cream from cones than from dishes. 许多小孩喜欢吃蛋卷冰淇淋胜过盘装冰淇淋。 来自辞典例句
5 wavelengths
n.波长( wavelength的名词复数 );具有相同的/不同的思路;合拍;不合拍
  • I find him difficult to talk to—we're on completely different wavelengths. 我没法和他谈话,因为我们俩完全不对路。 来自《简明英汉词典》
  • Sunlight consists of different wavelengths of radiation. 阳光由几种不同波长的射线组成。 来自辞典例句
标签: SSS wavelength
学英语单词
a baiuca
Bacillus septicus
bas respnse
benzimidazolamine
bicorne
binoculared
burning the midnight oil
Bursa intratendinea olecrani
cellwise
cerenam
CFC flip-flop circuit
chipped meat
clinical centrifuge
clip frame
common-cause failure (ccf)
contour listihg
contra-guide
control and interface
copper interconnect
counter ceiling
countersupply
crataegus wattiana hermsl. et lacc
crop circle
Digifan
direct-current potential
divergent spread
Eleusis
energy pyramid
filter basket
flag switch
fly-fish
fourwheel
friendling
gap welding
gayooms
glory in something
gopherus agassizi
granny square
graphic input language
Hacine
hangs-on
hcp structure
high temperature modification
hollimon
inference network
information notes
intermediate slide
Kauhajoki
kontakaria
madda
Menninger
Morrison County
Musi, Sungai
neaptide
non-pressure regulating roller leveler
nondegenerate assumption
Nordenskjöld Basin
nudi-
overwhip
Oxalis corniculata L.
pelvic arches
piecewise linear topology
Pleasant View
posttonsillectomy
preferred libility
principal axis factor
problem - based learning
prohumic substance
pterocarpus echinatus pers.
puglianite
quick-eyed
reginae
reiglement
rift in clouds
saccharising
Salitre, R.
sea-pie
Sheshbazzar
slab rubber
sleeper failure
spectrohe-liograph
Spumavirinae
stage of development
statement of daily cash
superorder
tamped concrete
tapered loading
target warker
testis cerebri
time-resolved fluorescence immunoassay
toxaspire
transaction auditing
Trochograptus
tube nipple
ubiquitinating
underwater dynamics
unloading amplifier
volcanic mountains
Waldsleinia
Wando-gun
West's lacuna skull