英语听力：自然百科 深海火山爆发

Researchers witnessed a spectacular fiery（炽热的） underwater volcano explosion and captured it on video. It's believed to be the deepest ocean volcano eruption ever recorded. The undersea Pacific Ocean explosions in May of this year were recor

英语听力：自然百科 鲨鱼湾的海豚—18

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英语听力：自然百科 鲨鱼湾的海豚—19

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英语听力：自然百科 鲨鱼湾的海豚—20

But as Puck passes the boat, the team get a stark reminder of just how much danger she and her family are facing.-Oh, she has a shark bite. Did you see that? Did you see that scar? -Oh, I see that. -It's a new one. -Yeah. It's new. That's bad. -A big

英语听力：自然百科 冰冻星球 前往地球尽头—7

This, Jakobshavn Isbrae, is the fastest flowing glacier on our planet, moving as much as 14 meters a day. As it advances, it destroys everything in its path, even cutting its way through Greenland's great mountain ranges on its drive downwards toward

英语听力：自然百科 冰冻星球 前往地球尽头—13

And fishing can be dangerous. A southern sea lion. It uses the speed of a breaking wave to catch up with the gentoos. Sea lions normally eat fish. So he is used to catching streamline swimmers. But the gentoos seem more than his match-up at sea. He m

英语听力：自然百科 冰冻星球 前往地球尽头—12

The Taiga forest marks the end of our journey through the Arctic from the frozen ocean down across the lands that surround it The other end of our planet, the Antarctic is starkly different. A frozen continent completely surrounded by ocean. Icebergs

英语听力：自然百科 冰冻星球 前往地球尽头—11

As the warm, humid air from the south meets the cold Antarctica, the moisture recurrence crystallizes and snow flakes form from this kind. Each crystal forms around a particle of dust. All have a six folds in the shape, but no two have ever been foun

英语听力：自然百科 冰冻星球 前往地球尽头—10

The bison/ form a defensive circle around their young, horns pointing outwards. The wolves need the bison to break rank, but the tables are turning and now the wolves have to retreat. The pack focus their attention on the rear of the herd and the bis

英语听力：自然百科 冰冻星球 前往地球尽头—9

Further south still, unstooped, shrouded figures end the flat monotony of the Tundra. This is the tree line, the first place on our journey with sufficient warmth and liquid water to enable a tree to grow。 Surviving here is so crushingly difficult

英语听力：自然百科 冰冻星球 前往地球尽头—8

A colossal iceberg is born. This single block of ice, many hundreds of meters across would dwarf the biggest of mankind buildings. Every year, tens of thousands of icebergs are spawned by Greenland's glaciers, and their number is steadily increasing

英语听力：自然百科 冰冻星球 前往地球尽头—6

For those who can get here in summer, these waters provide a feast of epic proportions. But the good times will be very short, a problem that faces all life in the Polar Regions. Journeying the south across the Arctic Ocean, the first land you/ reach

英语听力：自然百科 冰冻星球 前往地球尽头—5

It's time for the couple to go their separate ways. She will give birth to his cubs alone in nine months time. And he may never see her again. He returns to the frozen ocean, no doubt relieved to resume his solitary ways. And just in time, the ice be

英语听力：自然百科 冰冻星球 前往地球尽头—4

Few have witnessed this moment, for the male, his only tender encounter in an otherwise solitary life. But it doesn't last long. A rival suitor has also caught the female's scent. Courtship has to be put on hold. He must fight for his rights. He sees

英语听力：自然百科 徒步南非之克鲁格公园 The Kruger—7

For the Bushmen, it was this animal approaching that landed them in serious trouble. Zulu farmers chased the San further and further into the higher mountains, eventually pushing them out of the Drakensberg all together. -It is amazing to think that

英语听力：自然百科 徒步南非之克鲁格公园 The Kruger—5

-So,a pretty substantial herd of elephant...just a few feet away.And this is the fence...to protect us in our camp.Isn't that fantastic?But the real business of the wilderness experience doesn't start until the morning.And before that is the noises o

英语听力：自然百科 徒步南非之克鲁格公园 The Kruger—4

-Thank you, John.-So now we can breathe out and start to relax. -It is voluntary in this area. No one is allowed to go in this land. No one is allowed to walk in this area as well yet. So, for the next three days, bascially that all 62,000 acres is y

英语听力：自然百科 徒步南非之克鲁格公园 The Kruger—3

But before Y and I get any further,let's take a look at where we're heading.Frome Berg-en-Dal,before we'll drive follows the dirt track that leads into the Wolhuter wilderness area.My destination is the tiny and very basic trial camp,my place of refu

英语听力：自然百科 徒步南非之克鲁格公园 The Kruger—1

South Africa is a country that always creates an impression. We know of its diverse population, the troubled history of apartheid and its rebirth as a global travel destination. I've been a fan of this country for many years. But this is my chance to

英语听力：自然百科 徒步南非之克鲁格公园 The Kruger—2

-This is Burger dale, one of the main rest camps in the Kruger National Park, a sort of safe haven for humans if you will. But I am gonna take thing a little bit further and heading out into the bush on something called the volatile trail. It's a lit