时间:2019-01-08 作者:英语课 分类:Scientific American(九)月


英语课

 Humans have shaped the evolution of animals for as long as we have been catching 1 and eating them. In the days of spear hunting, speed and boldness were survival assets. But with today's high-powered rifles, the tables have turned. Animals that speed off in open are at most of risk and the advantage goes to shyer, more secretive animal. At least among elk 2. So says a study in the proceedings 3 of the Royal Society B.


 
Researchers outfitted 4 a hundred and twenty-two elk with GPS collars and tracked their movements before and during the hunting season. They found two different personality types. Bold runners who  runners who ran a lot in open range and shy hiders who kept a lower profile. As expected shy hider were more likely to avoid hunters' gunsights and survive. And that effect was the strongest among young elk facing their first hunting season, which suggest some genetic 5 basis for their behavior because the youngsters hadn't yet learned to fear human hunters. Problem is sitting still about a bad tactic 6 for escaping wolves and grizzlies 7. So human hunters may actually be selecting for traits that make elk more vulnerable to their natural predators 8. Leaving them stuck between a rock and a hard place. 
 
Thanks for the minute for scientific American sixty seconds science. I'm Christopher Intagliata.

adj.易传染的,有魅力的,迷人的,接住
  • There are those who think eczema is catching.有人就是认为湿疹会传染。
  • Enthusiasm is very catching.热情非常富有感染力。
n.麋鹿
  • I was close enough to the elk to hear its labored breathing.我离那头麋鹿非常近,能听见它吃力的呼吸声。
  • The refuge contains the largest wintering population of elk in the world.这座庇护所有着世界上数量最大的冬季麋鹿群。
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
v.装备,配置设备,供给服装( outfit的过去式和过去分词 )
  • They outfitted for the long journey. 他们为远途旅行准备装束。 来自《现代英汉综合大词典》
  • They outfitted him with artificial legs. 他们为他安了假腿。 来自辞典例句
adj.遗传的,遗传学的
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
n.战略,策略;adj.战术的,有策略的
  • Reducing prices is a common sales tactic.降价是常用的销售策略。
  • She had often used the tactic of threatening to resign.她惯用以辞职相威胁的手法。
北美洲灰熊( grizzly的名词复数 )
  • The Suns beat the Memphis Grizzlies 127-113 earlier Tuesday night. 在周二晚上早些时候,太阳以127:113击败孟菲斯灰熊。
  • Whatever you do, do not blink.They're like grizzlies. 无论你做什么,别眨眼。他们跟熊有点相象。
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)
  • birds and their earthbound predators 鸟和地面上捕食它们的动物
  • The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》
学英语单词
address for service
angular dissymmetry
as strong etc. as anything
binding energy per particle
body lock
breakage clause
bubenik
burnoosed
chekol
Chilkat
Christianshavn
cli-fi
close-ratio gearbox
Cohen, Leonard
comminglements
common crane
condominate
confirmably
cooling converter
Cronartium
cucumber dill pickle
current standing wave ratio
daffed
deaf ears
deoxyuridylate
development finance institution (dfi)
device characteristics
dey
diversion structure
driving spirit
DSG
duramater
Elbian
estimated reserves of crude oil
Eucalyptus saligna
evangelisers
faras
fault clearing time
fine machining
fixed-displacement-variable pressure pump
Forbes Reef
genus rachycentrons
Geranium nepalense Sweet.
GF-AAS
government-run factory
gray communicating branch
hand-punching
heave ahead
Huisne
i-wroht
import labo(u)r power
in vitro culture
inverso-
isocratically
Kitayama-gawa
lepidosaphes cycadicola
linear partial differential equation with variable coefficients
long life milk
luxury-product
middleport
miniwasher
Nonaspe
numerical control table
oceanographic hydrological element
office activity
officeless
okermanite (kermanite)
ophtalmometer
oscilloscopic polarography
out-thought
Phyllophoraceae
portable pulling machine
Potters field
primary water pump
rag-wheel
rat-goose
reachability of system
receding colours
ring-belt temperature
Rochuga
sesnsgslsissshs-s
spherical polygon
spreading bead
springer spaniel
St.Vitus dance
stimulating electrode
submarine sandwich
sulfaimidine
suredaite
system control programming
thread take-up cam position screw
thunderbolts
trimedone
Tsunenaga
typ(e)able
ultimate operational capability
unconformability
venae dentis
visible pit of track
voltage transformation
Wharton County