时间:2018-12-27 作者:英语课 分类:英语时差8,16


英语课

Don: Hey Yaël, what do locusts 2, neurons, robots and the movie Star Wars have in common? Yaël: You got me, Don. D: The answer is: Doctor Claire Rind, a [dict]biologist[/dict] and robotics expert at the University of Newcastle, England. Dr. Rind wanted to design a collision-avoidance system for cars. So she decided 3 to investigate the collision-avoidance system of locusts. Y: Why locusts? D: Locusts have fairly simple eyes and brains but still manage to fly in [dict]dense[/dict] swarms 4 of many millions without bumping into each other. She hoped that by understanding how locusts managed this feat 5, she could design a robotic system based on their neural 6 [dict]machinery[/dict]. Now here is where it gets a little wacky--she made locusts watch Star Wars while monitoring the reactions of their visual systems. Dr. Rind discovered that locusts have special neurons that respond specifically to looming 7 objects--or objects moving straight toward the locust 1, like on-screen spaceships. These movement-detector neurons [dict]distinguish[/dict] between approaching and receding 8 objects by the way the edges of the object's image seem to grow or [dict]shrink[/dict] in their field of vision. Y: Neat! D: Then Rind and her [dict]colleague[/dict]s translated the locust's [dict]neural [/dict]processing to a small robot with cameras for eyes and had it [dict]zoom [/dict]through an obstacle course. The robot was able to avoid collisions 91% of the time! Now a team of neurobiologists, engineers, and designers is working on an automatic collision avoidance system for cars. The so-called "Locust Project" uses the knowledge gained from Star Wars-watching locusts. One day your car may be able to avoid collisions with the speed and accuracy of flying locusts! Y: Now that's science in action!



1 locust
n.蝗虫;洋槐,刺槐
  • A locust is a kind of destructive insect.蝗虫是一种害虫。
  • This illustration shows a vertical section through the locust.本图所示为蝗虫的纵剖面。
2 locusts
n.蝗虫( locust的名词复数 );贪吃的人;破坏者;槐树
  • a swarm of locusts 一大群蝗虫
  • In no time the locusts came down and started eating everything. 很快蝗虫就飞落下来开始吃东西,什么都吃。 来自《简明英汉词典》
3 decided
adj.决定了的,坚决的;明显的,明确的
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
4 swarms
蜂群,一大群( swarm的名词复数 )
  • They came to town in swarms. 他们蜂拥来到城里。
  • On June the first there were swarms of children playing in the park. 6月1日那一天,这个公园里有一群群的孩子玩耍。
5 feat
n.功绩;武艺,技艺;adj.灵巧的,漂亮的,合适的
  • Man's first landing on the moon was a feat of great daring.人类首次登月是一个勇敢的壮举。
  • He received a medal for his heroic feat.他因其英雄业绩而获得一枚勋章。
6 neural
adj.神经的,神经系统的
  • The neural network can preferably solve the non- linear problem.利用神经网络建模可以较好地解决非线性问题。
  • The information transmission in neural system depends on neurotransmitters.信息传递的神经途径有赖于神经递质。
7 looming
n.上现蜃景(光通过低层大气发生异常折射形成的一种海市蜃楼)v.隐约出现,阴森地逼近( loom的现在分词 );隐约出现,阴森地逼近
  • The foothills were looming ahead through the haze. 丘陵地带透过薄雾朦胧地出现在眼前。 来自《简明英汉词典》
  • Then they looked up. Looming above them was Mount Proteome. 接着他们往上看,在其上隐约看到的是蛋白质组山。 来自英汉非文学 - 生命科学 - 回顾与展望
8 receding
v.逐渐远离( recede的现在分词 );向后倾斜;自原处后退或避开别人的注视;尤指问题
  • Desperately he struck out after the receding lights of the yacht. 游艇的灯光渐去渐远,他拼命划水追赶。 来自辞典例句
  • Sounds produced by vehicles receding from us seem lower-pitched than usual. 渐渐远离我们的运载工具发出的声似乎比平常的音调低。 来自辞典例句
学英语单词
ace it
Acer leiopodum
affiliated society
American hop
analysts
Androsace zayulensis
annuler
antennal neuron
Archibald prize
bacterial membrane
besport
blocking relay
body-ring
broken circle
c-type
caprimulgidaes
Carya tomentosa
cattle actinomycosis
cavum hyaloideum
chloroacrolein
chorea syndrome
chronic hepatic encephalopathy
cmyc
codebook coding
concave grating spectrometer
condylar fracture
cupro fibre
curvature vorticity
De Sauty's method
deflocculator
Dorila
dye-dilution
ecobuoy
edge-defined film-fed growth
Emissy
endoecism
ethyl sulfonamide
extraneous nonterminal
flank on
flat deck poultry cage
foliated talc
gulancha
Heilong
hexyne
hollow flint glass
honeworts
Huatong
hydroxyskatol
ingratiate hiself with
job vacancy
Kordofan
Kotoko
local shear
localized
lone signal unit
lonithermies
lump-sum pension
macrophoma magnoliae
marcerized cotton
mid-months
Modal fibre
monoclinic pyroxene
mound-birds
neuro-patterns
off one's game
oncoapoptosis
one flew over the cuckoo's nest
oxygen resuscitator
pack tilting device
Palairos
pancreaticjejunostomy
pelvimetry
poitrel
predrag
price fixing agreement
pumpkin vines
quench-fire
scalping screen
security operations
selection examination
sequesterer
short-driven bolt
sister species
skyscraper sheaf
SMSI
solid-state scintillation counter
spermatozoicide
split fractions
stack tree
stopper ladle
subdivision rules
subscleral
system source
teaming up
transfix
turn something over to somebody
undecidable ring
wavy water surface
whale-watch
whaps
yamanashi
zone letter