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
a FILF
active data structure
analytic sequence
anise alcohol
Anoectochilus emeiensis
application for foreign exchange
at public expense
Bokele
boykies
brawne
bridging mechanism
call on someone
caned
Clap Trap
clock time measurements
Co-Liver
combined foundation
continental shield
conversion of branch trial balance
crosspollination
Dambai
dissemblest
drop zone
emitter window
equally spaced
equivalent device
fashion forecast
Garvão
gleeman
Go tell it to birds
government stroke
grovellers
grug
handrail
high strain rate
hippocras
huaquero
huckerby
hydraulic power production plant
hypselothyrea (deplanothyrea) breviscutellata
in parenthesis
indagatrix
infinite classical group
interplant transmission
intree
invictas
isohydrocarbon
jonoes
kerfluff
Kiskunmajsa
lateral restrain
lexmark
lie athwart
loses out
marine abrasion
modulo check
Morris' point
mosle
natural and man-made disasters
noise requirement for cordless phone
noncommission
normal polynomially compact operator
nosecap
oval aperture
pairs up
par terre
paragiopagurus bicarinatus
part per million(ppm)
pictureshow
press head
pressureproof
process pipe line
quick-change gear
record protection
repope
resemblable
rolling herd average
rub on
ruddles
safety management of traffic
salt lagoon facies
Sapo, R.el
scams
shuttlewise
sialolith
silicon epitaxial planar transistor
ski conditions
SQPSK
steel rope device
supersymmetrisation
Swapo
tandem reaction
tanteuxenite
Tarbagatay
thermic syphon neck
three L
tory socialism
tumeo
unperforate
valve of inferior vena cava
vomitus marinus
Wilde's triangle