单词:tundra crater
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The World’s Top Ten Destinations 1 Ankor Wat is part of a vast network of around a hundred ancient temples hidden deep in the Cambodian 1) jungle. A thousand years ago, this was a 2) thriving wooden
[00:03.70]Frank, is he always so obsessive? 弗兰克 他总是这么专心吗? [00:06.62]-Yeah. -Yes. 对 是的 [00:11.06]Does he ever lighten up? 他从来没放松过吗? [00:11.30]-Not really. -No. 没见过 没有 [00:17.02]How long have you be
The woolly mammoth was a very large elephant-like mammal that lived on Earth several thousand years ago. Some mammoths grew to be four meters high and the largest weighed almost nine tons. Both male and female mammoths had very large tusks and walked
This is Scientific American's 60-Second Science. I am Adam Hamterture, got a minute? What's sixteen feet tall and 9,550 years old? Its the world's oldest tree. The worn and weathered spruce grows in Sweden's windswept tundra. But, until recently, wel
Humans are pegged to a 24-hour cycle. We're locked into it not just by day and nighttheres the master timepiece in the brain called the circadian clock. But it doesn't make sense to live by a 24-hour clock in the Arctic, where it's dark or light for
[00:04.60]Saving the Rainforests for Future Generations [00:07.77]为子孙后代救救热带雨林 [00:10.95]Rainforests are being cut and burned from Brazil to Indonesia [00:14.93]从巴西到印度尼西亚,热带雨林正在以极快的速度被砍伐和烧毁, [00:18.91]at such a
Grizzly bears once roamed much of the United States. But two centuries of hunting and habitat loss have devastated their numbers. Today, less than 1,200 live in the Lower 48. If there is a last remaining stronghold for the North American Grizzly, it
Life on the Tundra Tundra is the name given to the low, marshy plains of Europe, Siberia, and North America that border on the Arctic Ocean. In Alaska, the vast, cold region known as the
Tundra is the name given to the low, marshy plains of Europe, Siberia, and North America that border on the Arctic Ocean. In Alaska, the vast, cold region known as the Northern Slope is part of the tundra. Nature sets harsh terms for survival in this
In Saskatchewan, as across all of the boreal, home to some of our most famous rivers, 横跨北方森林的萨克其万省,拥有一些著名湖泊, an incredible network of rivers and lakes that every school-age child learns about, the Peace, th
Autumn in the Rocky Mountains, a time of change. Aspens turn golden and the bull elk, in the midst of their mating season, work hard to catch the eye and ears of the ladies. Up in the highest peaks, another call rings out. It's the pint-sized prince
While the males fence, the females look on. Injured and weakened by the battle, the loser will be an easy target for the predators and scavengers that patrol the wilderness. Out here, there is little room for mistakes. With a clear view of the endles
OTTAWA, Aug. 27 (Xinhua) -- Canada's Prime Minister Stephen Harper announced Monday that Lieutenant-General Thomas Lawson has been appointed as Canada's new chief of the defence staff, the country's top military post. Lawson, who assumed the position
Smart ecology like this is what enables China to be largely self-sufficient in food even today. Back in the village, Yang has his own smokehouse, where he preserves his fish ready for market. Longshan carp have unusually soft scales and a very delica
This is AP news minute. 1. Donald Trump shook up his transition team on Friday, elevating vice president-elect Mike Pence to head the operations. The shift amounted to demotion for New Jersey governor Chris Christie who has been running Trump's trans
I call this ability collective learning. It's what makes us different. 我把这个叫做集体学习的能力。这使我们如此特殊。 We can see it at work in the earliest stages of human history. 我们可以看到在人类历史早期的阶段
Science and technology 科学技术 How to win at poker 怎样成为扑克牌高手 A handy tip 诀窍之一 Keeping a straight face is not enough 喜怒不形于色?不太够 A POKER face. It is the expressionless gaze that gives nothing away. 所谓
Lay it on me, sweet Internet. Advertisement? Oh, hey. You want to watch that baby sloth video again? Was that a no? 因特网宝贝,给我出来我吧。又是广告?哦,嘿。你想再看看那个树獭宝宝的的视频吗?所以是拒绝我咯
The Alaska Pipeline The Alaska pipeline starts at the frozen edge of the Arctic ocean. It stretches southward across the largest and northernmost state in the United States,ending at a remote ice free seaport village nearly 800 miles from where it be
几乎在每次托福考试之后,我都可以听到某些同学对着细节题扼腕长叹道:我怎么这样的题也会错!是的,我们在上课的时候,反复听着老师一遍遍地说细节题的解题方法,自以为这些方法都早