时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

这看起来像是我们的祖先懂得收集有着锋利边缘,可以用来切肉的工具,就好像小孩子们懂得挑选扁平的石头用来打水漂一样。但是未来的考古工作致力于寻找把石头塑造成厨具的工具。相信三百四十万年后,露西跟她的伙伴们会不断给我们带来惊喜。


There’s nothing like a good steak. And our Australopithecus afarensis ancestors apparently 1 felt the same way. Because new discoveries from Ethiopia show that what was likely the species of the famous fossil Lucy used stone tools to butcher meat from big mammals—about 3.4 million years ago. That’s a million years earlier than our best previous evidence for human ancestor stone tool use and meat eating. The finding appears on the cover of the journal Nature. 


The research team found two fossil bones with cut and scrape marks, signs of meat carving 2. One bone was a piece of rib 3 from a cow-sized mammal; the other, a leg bone fragment from a mammal the size of a goat. The bones also had percussion 4 marks, sustained while Lucy’s friends smashed the bones to get at the marrow 5.


It looks like the ancient tool users collected stones that happened to have shapes conducive 6 to butchering, the way kids select particular stones with good potential to skip on water. But future expeditions will look for evidence for any attempts at shaping stones into kitchen utensils 7. Because after 3.4 million years, Lucy and her fellow afarensis keep surprising us.


—Steve Mirsky

 



adv.显然地;表面上,似乎
  • An apparently blind alley leads suddenly into an open space.山穷水尽,豁然开朗。
  • He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
n.雕刻品,雕花
  • All the furniture in the room had much carving.房间里所有的家具上都有许多雕刻。
  • He acquired the craft of wood carving in his native town.他在老家学会了木雕手艺。
n.肋骨,肋状物
  • He broke a rib when he fell off his horse.他从马上摔下来折断了一根肋骨。
  • He has broken a rib and the doctor has strapped it up.他断了一根肋骨,医生已包扎好了。
n.打击乐器;冲突,撞击;震动,音响
  • In an orchestra,people who play percussion instruments sit at the back.在管弦乐队中,演奏打击乐器的人会坐在后面。
  • Percussion of the abdomen is often omitted.腹部叩诊常被省略。
n.骨髓;精华;活力
  • It was so cold that he felt frozen to the marrow. 天气太冷了,他感到寒冷刺骨。
  • He was tired to the marrow of his bones.他真是累得筋疲力尽了。
adj.有益的,有助的
  • This is a more conducive atmosphere for studying.这样的氛围更有利于学习。
  • Exercise is conducive to good health.体育锻炼有助于增强体质。
器具,用具,器皿( utensil的名词复数 ); 器物
  • Formerly most of our household utensils were made of brass. 以前我们家庭用的器皿多数是用黄铜做的。
  • Some utensils were in a state of decay when they were unearthed. 有些器皿在出土时已经残破。
学英语单词
a-thus-gate
adjustment of empty cars
all mouth
Amsler tester
appellatively
arab-israeli
archosauriforms
auspicate
bassile
beggar's bolts/bullets
bell ropes
betamethasone sodium phosphate
bluter
bottom line
Brachytheciaceae
broken with
center and rear-axle drive scraper
centre line average height
Chi.
coaxed
constant ratio frequency changer
coordinador
cotqueans
courts of law
damping coil
Decadopa
defusing of activation
die in harness
dieticians
digital system quantizing error
dynamic characteristic test for generator set
egg-shape
eisenia
elliptical lift distribution
evangelised
evoluble
exterior package
fisher's theory of dominance
fixed temperature levels
foot bar
haemostatica
hegyi
heliocentric coordinate network
hemidome
herfindahl
hprt
hull-loss accident
hyposulphurous
idiolog
investment trusts
jack arm
Jenday
jump statistic
lovanoes
lysosomic
macaroni salads
made a good job of it
medullary cells
necessary places
nitzschia cocconeiformis
Ocean City
one particle approximation
overhead projector (ohp)
paper bowl
personal ground
phonotypist
pier mirror
pitch-kettle
pluteus leoninus
polygraphists
psilo-
push-pull sound-track
quintisternum
receiver tank
reentry draft
rejuvenizing
relaxed skin tension lines
remerging
reservoir hanger
Roquebrune-sur-Argens
rules of practice
saccine
saturated adiabatic
shock absorber stop
show your stuff
silk scroop
single pulse decatron
step bearing bracket
stick mast
synchronous excitation spectroscopy
Syurkum
tandem-compound turbine
tank gasometer
TC (thermal couple)
television tape
tie-beams
tuck heigh
unbruisable
unit load command
value call
Vinke
yee-cheong