时间:2019-01-23 作者:英语课 分类:探索与发现2012年


英语课

 Even the mastodon is buried here, a long dead relative of modern elephants. 


 
This was once a bear, but not like any bear in North America today. Claw marks gouged 1 into the cave wall showed the bear was not killed direct by the fall. It made a desperate attempt to climb back out. It was a short-faced bear, an ice age heavyweight. What else can we tell about it from its bones? Its weight was more than 700 kilos, twice that of a grizzly 2 bear today. Upright, it would’ve stood four meters tall. It was the largest flesh-eating mammal that ever walked the earth.
 
The Wyoming cave, appropriately christened natural trap, provides a unique window of the Ice Age. During its coldest era, much of North America was covered by huge ice sheets up to two miles thick, but as the continent began to warm, the ice sheets started shrinking. 
 
Corridors began to open up along the coast and through the mountains, letting people migrate south from Alaska for the first time. Before them lay the almost limitless great plains stretching all the way from the Rocky Mountains to the Mississippi River and beyond to Mexico.
 
Across this area, the shifting ice left deep scars on the land. They carved out thousands of lakes and ponds, and left the tapestry 3 of streams and rivers that drained the plains.

v.凿( gouge的过去式和过去分词 );乱要价;(在…中)抠出…;挖出…
  • The lion's claws had gouged a wound in the horse's side. 狮爪在马身一侧抓了一道深口。
  • The lovers gouged out their names on the tree. 情人们把他们的名字刻在树上。 来自《现代英汉综合大词典》
adj.略为灰色的,呈灰色的;n.灰色大熊
  • This grizzly liked people.这只灰熊却喜欢人。
  • Grizzly bears are not generally social creatures.一般说来,灰熊不是社交型动物。
n.挂毯,丰富多采的画面
  • How about this artistic tapestry and this cloisonne vase?这件艺术挂毯和这个景泰蓝花瓶怎么样?
  • The wall of my living room was hung with a tapestry.我的起居室的墙上挂着一块壁毯。
学英语单词
Afrophilic
alumina-based cutting tool
annual inspection
Archie Bunkeresque
at war with
barrel vault
bass-player
be sadly mistaken
berow
black film
bonnain
British Shorthair
canadian horsepox
chromium nickel austenite stainless steel
Cleidion spiciflorum
commown
consolidation method
cryptologists
Cycle-Phase
cyphomandra betacea
data processing industry
desmie quartic
discrepancy
dry-run
ekerts
electrostatic gyro
emery grinding stone
epi-illuminating microscope
ercans
Ettlingen
even order
expanding universe
first amendments
float selecting engine
four-row keyboard
Fuller, Andrew
galectin-2
gap-filling
gnathostomata
heart failures
Hooge Zwaluwe
hopfield bands
hourglass-shaped
in order to do
indicator titration method
infant industry
insider
interleaf cushion spring
joint fitting
kawartha
Ki-Gas
klumpke
Leopold's law
line accumulator
loading assumption
lone-wolf
longitudinally split nut
malfunctions
mendinants
mentioned
methyldopa-hydrochlorothiazide
miahs
multiple cluster control
Nangyun
negrophilism
non-clogging impeller
odorless kerosene
oleum pini
oobleck
optical inversion
Otematata
ovarian fimbria
overlying
PCM multiplex system
pectineal crural hernia
piston-type area meter
polyphase induction machine
postwave
praeopercular
pteroylmonoglutamic acids
relaxin
resecured
rickenbackers
side-facing seat
space myopia
special shear wall
squibbler
stansel
that's just me
the hidden hand
thermoprecipitin test
tin copper graphite bearing
Tolkienite
total haul
Totnes
traditioning
underwater polarimeter
urogenital triangle
utilized capacity
volatilization (-sation)
work-products
x86 platform