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
acceleration transducer
aflatoxicol
Agadir Canyon
aglowest
anti-helicopter
antimutagenics
arrive at an understanding
athanasia
b-y
bar weight
bearing sleeve seal
beat frequency interferometry
Belledonne, Chaîne de
blackish
borehole deviation
brake cylinder displacement
Bāhtarān
capnography
cardiovirus encephalomyocarditis virus
chlorostyrene
Churovichi
clitocybin
cohesiometer value
conidiosporae
continuous function
cross ribs
cross-harbours
cultice
Dresssed
emergency coupling device
energys
false-start
Farnhill
fly-tyings
fuel oil stabilizer
Garrelsweer
graial
gumbah
hardness degree
have the black ox tread on one's foot
homoneura (homoneura) unguiculata
horseless
huevos
hurtlessness
id est
inception point
inch dimensioning
incomplete bill
inspire sth in sb
isotretinoion
jeeks
jervine
jesuited
key code table
knee bracket
kouprey
laser gyroscopy
list-directed input list
Love number
lunar structure
mains-signalling
mavroes
metablastesis
money order delivered cash
mosaic wood
muang laung(long)
Mumbeji
musume
nonamputees
oidium cylindricum
operationalisations
outra
over-pricing
oxygen absorption barotrauma
per the standard
pit-a-pat
pointlet
primary minimum
pulsecontroller
Santa Coloma de Queralt
Santa Marta, Pico
savidge
self-limited
smart pager
spare sb his life
stephanocyst
strenk
subscription call
Sweden-style
traditionalists
traumatic paraplegia
triumph of the will
uk funfair
waist girth
water-gruel
wave the bloody shirt
web-ct
Weber's triangle
wildfowls
wooton
Zabeltitz
zolertine