文章列表

• 1.英语听力：自然百科 大迁徙 Great Migrations—11
• It's a grim end to a short life, but many of the surviving calves will face a more terrifying death. In the Mara River, another migration is culminati...
• 2.英语听力：自然百科 大迁徙 Great Migrations—10
• A quarter of a million wildebeest will die in their yearly odyssey. In the sun burnt Serengeti, hunger keeps the wildebeests thundering northward, fol...
• 3.英语听力：自然百科 大迁徙 Great Migrations—9
• Females travel in family groups, sometimes leading their young on yearly wanderings of up to 20,000 miles. Each day, they gather to reaffirm their bon...
• 4.英语听力：自然百科 大迁徙 Great Migrations—8
• For the delicate monarch, it may as well be a trip to the moon. And yet somehow they do it, their tiny bodies attuned to a seasonal sundial and resona...
• 5.英语听力：自然百科 大迁徙 Great Migrations—7
• Then the brilliant masses take to the wing, heading to a place they've never been. Their only map, imprinted on their genes. A mysterious interplay of...
• 6.英语听力：自然百科 大迁徙 Great Migrations—6
• Ravenous triggerfish seize the luckless, an unceremonious end to an epic quest. For the surviving males, the odyssey has just begun. The females will ...
• 7.英语听力：自然百科 大迁徙 Great Migrations—5
• It's a brutal, month-long migration, up to 5 miles, an ultra-marathon for a crab. The cruel sun makes its appearance, threatening them with dehydratio...
• 8.英语听力：自然百科 大迁徙 Great Migrations—4
• Only the fit and the lucky will inherit the relay race of their lives. It is a race that is increasingly endangered like many of the world's great mig...
• 9.英语听力：自然百科 大迁徙 Great Migrations—3
• Apprentice killers wait for their taste of the chase. But they're about to learn that hell has no fury like a zebra protecting her foal. Older cheetah...
• 10.英语听力：自然百科 大迁徙 Great Migrations—2
• What on earth could drive this headlong rush to slaughter? Only earth herself with her insistent clocks. This story begins in the Great Rift Valley, w...