英语听力:自然百科

A male polar bear is searching for a mate. Willing females are few and far between. And the sea ice some of which he travels will soon melt and vanished. He's running out of time to find the mate in this frost frozen desert. Ten miles ahead, a single

发表于:2018-12-03 / 阅读(183) / 评论(0) 分类 自然百科2011年

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发表于:2018-12-03 / 阅读(136) / 评论(0) 分类 自然百科2014年

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发表于:2018-12-03 / 阅读(146) / 评论(0) 分类 自然百科2014年

It was a very thought of wandering these mountains that first attracted Brian. He's remained a firm fan even since. He's even written a book about the hotel's history and his experience here.-It's so different from anything else you can find anywhere

发表于:2018-12-03 / 阅读(169) / 评论(0) 分类 自然百科2012年

Day two, and rather worryingly, the weather doesnt seem to be improving. It also requires a painfully early start. Its an 18-kilometer round trip from the hotel to the summit, which most hikers tackle in one go, averaging eight to nine hours of stead

发表于:2018-12-03 / 阅读(147) / 评论(0) 分类 自然百科2012年

It's on foot. It's amazing how quickly you find yourself in isolation. There's nobody here, just the baboons. The morning mist seems to be pretty determined not to lift. No sooner have I begun to make progress on my walk, then the path ahead goes com

发表于:2018-12-03 / 阅读(170) / 评论(0) 分类 自然百科2012年

An unexpected break in the weather means I am able to make one more stab at the summit. -It's difficult to believe this is the same spot as yesterday without the rain. You can actually see. And look at that vista! With the spring back into my stab, t

发表于:2018-12-03 / 阅读(159) / 评论(0) 分类 自然百科2012年

Oh Julia,take a good look on the moutain.This is the last time you gonna see a full view of Cathedral Peak up until we get very close to it.And the best.So enjoy it.-How can you not enjoy it.-Enjoy it.Take it all in.-Nice cool bit of cloud. There's l

发表于:2018-12-03 / 阅读(153) / 评论(0) 分类 自然百科2012年

This is the halfway point of my walk today. It's been three hours since I started it out, some ideal spot for rest. I'm finally in the upper Berg.-So this is where people do in origins. -Yes. -Now I wish it's today though. I've come to realize this i

发表于:2018-12-03 / 阅读(136) / 评论(0) 分类 自然百科2012年

Can you see that, there's a dolphin, dolphins, right down there. To spot dolphins immediately was really unexpected. Come back, let's go, quick ,quick. Ben and Nick, trying catch up with the dolphins. But soon find themselves tracing them up and down

发表于:2018-12-03 / 阅读(180) / 评论(0) 分类 自然百科2013年

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发表于:2018-12-03 / 阅读(138) / 评论(0) 分类 自然百科2014年

But it's not enough. For a hunting bear, it doesn't get much worse than this. The seal could hardly fail to notice. But this battle-hardened seal is in no rush. Finally he gains some purchase, he's back in the game. He still believes he's in with a c

发表于:2018-12-03 / 阅读(168) / 评论(0) 分类 自然百科2010年

Archaeologists in Canada's Yukon have found whats believed to be the only untouched shipwreck from the Klondike Gold Rush, made famous by writers Jack London and Robert Service. Underwater video, taken with a remote operated vehicle, shows the remark

发表于:2018-12-03 / 阅读(147) / 评论(0) 分类 自然百科2009年

One of the most iconic animals of the Galapagos Islands is the Giant Tortoise. Charles Darwin wrote of this tortoise in his famed report , Origin of Species, published 150 years ago this month. The differences between the tortoises from island to isl

发表于:2018-12-03 / 阅读(153) / 评论(0) 分类 自然百科2009年

As dawn breaks, fishermen work furiously to hauling tuna. But while the fish may seem plentiful, there is trouble on the horizon. Fishermen were the fist to notice the alarming effects of rising sea temperatures. Beneath them the coral reefs are dyin

发表于:2018-12-03 / 阅读(146) / 评论(0) 分类 自然百科2009年

Mount Everest looms in the distance. Its snow and ice-capped peak gleams in the sunshine. The Himalayan glacier is a fragile ecosystem, which environmentalists warn could soon disappear. Greenpeace says that as global warning increases temperatures a

发表于:2018-12-03 / 阅读(163) / 评论(0) 分类 自然百科2009年

High in the northern mountains on the island of New Guinea, in the cloud forest lives an elusive animal found no where else in the world. (Hello!) With an endearing face and a thick fur, the Matschies tree kangaroos of Papua New Guinea(巴布新几内

发表于:2018-12-03 / 阅读(198) / 评论(0) 分类 自然百科2009年

Papua New Guinean Gabriel Porolak handles the captured male. He is the Tree Kangaroos Conservation Program Research Coordinator and a key figure in the local preservation effort. (Six kilograms.) The captured animal is weighed and examined by veterin

发表于:2018-12-03 / 阅读(188) / 评论(0) 分类 自然百科2009年

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发表于:2018-12-03 / 阅读(230) / 评论(0) 分类 自然百科2014年

The cormorant gives up for now. The bird has been foiled by the clarity of the water, the very thing that enables the manatee to thrive. The light through these waters helps plants flourish, and manatees are strict vegetarians. They can eat a hundred

发表于:2018-12-03 / 阅读(178) / 评论(0) 分类 自然百科2009年
学英语单词
air and light space
annual plans
antiaircraft fire control computer
Armance
aschemeyer
ash hoist engine
band-wagons
barrelhead
Beilstein tests
bishop's-weed
bytownite
calininsc (cupcini)
chrysoprasus
Churyumov-Gerasimenko
coal dust cementing agent
complimentative
Conservative Jew
constant failure intensity period
constant weight ode
cost-conscious
credit cardholder
data acquisition station
daylite
desferricoprogen
digit frame
dynamic hysteresis
electrogymnastic therapy
enteromorpha prolifera
expedient
flat square
flow rate fluctuation
food bowl
format primary
friction roll drop hammer
functional reconstruction of thumb
gas ultracentrifuge
genus xeranthemums
go into particulars
halliard bend
heavy-load truck
hundred-and-sixtieth
impedance exploration
incapableness
indirect antonyms
karole (w. europe)
Knox City
labour productivity in tons per person-day
laminac
lig. collaterale carpi radiale
loose-cannon
main boundary thrust
mattress woven
medicina
Merkurialsalbe
microcode compilation
myonucleus
narrowing
navicula scutiformis
non-surface-active agent
nutmeg family
Orekhovka
orientation function
papillomacular
pcp
Photo League
pinks of my john
pipe stopper
Playmasters
polymer-solvent
positivistic
prison warder
projection on meridain
ptereleotris evides
rack focus
Riethuiskraal
S.S.W.
sacchite (monticellite)
Sartre
secretarial
self-loading and unloading ship
semifloating raft culture
semiwall
sep-ira
slumlands
spinawl
squeezier
stagnation period
starter center bearing plate
stereographic horizon projection
string merging phase
superior umbilicus
theca-lutein cells
total leverage
unattemptable
unexculpated
unit liabilities
upside-down motion
urathrovaginal fistula
weatherwise
white hope
windowboxes
Zenker's myomalacia cordis