英语听力：自然百科 冰冻星球 前往地球尽头—3

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

英语听力：自然百科 冰冻星球 前往地球尽头—2

I am standing at the North Pole, the very top of the earth. Up here, it's easy to see why the Polar Regions are so cold. The sun never rises high enough in the sky to warm my back. And those rays that do strike the surface are mostly reflected back f

英语听力：自然百科 冰冻星球 前往地球尽头—1

Over one third of our planet is frozen, and yet the icy worlds of the Arctic and Antarctic are as alien to most of us as the surface of another planet. They are places of superlatives, from ice caps that hold nearly 80% of our planet's fresh water to

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 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—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—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—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—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—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—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—18

The relative of the woodlouse is the size of dinner plate. And this so- called sea spider has legs that expand half a meter. Now it's explorer's own revealing other worlds that lie hidden beneath the ice on land. These smoking tars are the gateway to

英语听力：自然百科 冰冻星球 前往地球尽头—15

The randoms of the sea ice are occupied by sun- bathing seals that have been here all winter. But the new arrivals're following the retreating ice edge and they have come here to hunt. Killer whales, the oceans' top predator. Killers are like wolves,

英语听力：自然百科 冰冻星球 前往地球尽头—17

Exhausted, it no longer has the energy to pull itself to safety. And the killers are moving in. Game over. Although such team hunts are rarely seen, scientists believe they may be the most complex ever documented in the natural world. They were first

英语听力：自然百科 冰冻星球 前往地球尽头—16

The seal is now what the killer wanted, but the hunt is far from over. They need to wrap their prey by the tail while avoiding its snapping jaws. Only them will they be able to pull it down and drown it. Side swipes create farther underwater turbulen

英语听力：自然百科 冰冻星球 前往地球尽头—19

They were travelling on foot and their first sight of this mountains must have been daunting indeed. In front of them stretched one of the world's longest ranges, spanning two thousand miles from one side of the continent to the other. The winds uphi

英语听力：自然百科 冰冻星球 前往地球尽头—21

The greatest challenge for the team-making frozen planet was the extremely remote of their locations. Many of the shoots lasted almost the time and needed a number of clues to join forces. One location that world classic of see the Antarctic was Moun

英语听力：自然百科 冰冻星球 前往地球尽头—22

Serious produce server Neser Balwich directs from the front seat while aerial cameraman Mike Calen controls the camera attached to the lows. Above 10,000 feet, the pilot must breathe oxygen through a passed tool beneath the nostrils. Approaching the

英语听力：自然百科 冰冻星球 前往地球尽头—23

Youve got these beautiful clear glass-like pillars and right next to it, its really delicate. Look at in them, filament is there. As the cave team explore deeper, each chamber reveals ice crystals more strange and spectacular than the last. No one on

英语听力：自然百科 冰冻星球 前往地球尽头—24

End of the run. No! Ive got him coming out, I just didnt get him going back in. All right! Below the sea ice, the dive team is setting up an underwater studio. Using a rang of waterproof lights and time-lapse cameras, they hope to capture the growth