音标:['greizə] ;
n. 吃草的动物, 食草动物

This mother bear's experience gives her family a good chance of survival until spring arrives. They will return again and again as the thaw releases more fish. On the warmer plains and valleys that surround the plateau, grazers are on the move. They

发表于:2019-01-05 / 阅读(106) / 评论(0) 分类 自然百科2012年

This is Alaska today, a wetland of forests, boggy tundra, lakes and rivers rivers that still churn out fresh clues to the Ice Age past. This is a brick-sized tooth, and it belong to a woolly mammoth. Its narrow ridges of enamel tell us more about how

发表于:2019-01-23 / 阅读(119) / 评论(0) 分类 探索与发现2012年

Musk oxen and arctic hares are well-insulated against the cold as are the largest grazers of them all, the woolly mammoths. This herd is regrouping, ready for a long day feeding on the grasses beneath the snow. Mothers need to keep milk flowing for t

发表于:2019-01-23 / 阅读(125) / 评论(0) 分类 探索与发现2012年

But there is a problem with the idea that hunting caused the mass extinction. Mammoths were not the only animals to disappear. Camels survived for millions of years in North America, but disappeared around the same time as the mammoths. Wild horses f

发表于:2019-01-23 / 阅读(145) / 评论(0) 分类 探索与发现2013年
学英语单词
ACL
air-cooled type
artocarpus integer
astrofix
automati
aversion response
balkier
basket-weaves
bawdiness
be equipped to
blums
boundlessness
brake antiroll
brine displacement
c.d
camlachie
carol(l)ite
conductive fibre
custody for account of customers
database portability
demobee
diagnostic mineral
differential thermal analysis (dta)
digital audio deck
downhiller
duffle bags
electron beam cutting
emergency speed variation
endogenous
equalizing impulse
Euonymus dielsianus
fission event
Flemingites
four-phase cycle
freta
fun-packeds
gershons
global area coverage (gac)
goods set aside on behalf of the buyer
gray marketer
happen what will
heating and power center
hellhouses
horn-gap swithch
human pollution burden
hydroelectrical
hydroxy benzyl isosulfocyanide
immunosurgeries
inbetweener
incandesced
injection drain pipe
inlet guide vane (igv)
internal broacher
kisha
Kitchenheimer's
koynte
Krapkowice
La Môle
ladie
leads and lags
leaf proteins
long-term stabilization
mental files
Methylvola
michiganders
musical organisations
Negombo
non-repetitions
Ophiopogon marmoratus
oscillating flow
P5
padle
padma
parasylvian area
permanent completion
phosote
pleuronectiform
pollena
private data
recontinuation
reference great circle
remove the ban on
router level logical connection
satin glaze
sieling
sixshooter
speed at instant of contacts touching
stochastic independent model-space control
subbreed
symphyllode
top-hinged in-swinging window
tribranchiate gill
trigonohedral antitetartohedral
TSAS (time-shared supervisor assembly system)
tube-within-a tube
unorthographically
uran mica
Villanueva de San Juan
weld-on tool joint
William Harrison Hays
with zest
yowley