听力文本

Two miles up, the crumbling precipices seem devoid of life.
两英里高的碎石崖上似乎不可能有生命存在
But there are animals here. A grizzly bear.
可是那里仍有动物。一只灰熊
It seems to be an odd creature to find on these high rocky slopes.
很奇怪这样的动物为何会爬到如此高的碎石斜坡上
It's hard to imagine what could have attracted it here.
真不知道这里有什么吸引着它
At this time of the year, bears should be fattening up for the winter,
在每年的这个时候，熊必须为越冬储备脂肪
yet they gather in some numbers on these apparently barren slopes.
然而却有一定数量的灰熊聚集在这片不毛之地

They're searching for a rather unusual food. Moths.
它们正在寻找一种很特别的食物。飞蛾
Millions have flown up here to escape the heat of the lowlands and they're now roosting among the rocks.
为了躲避低洼地带的炎热，数百万只飞蛾抵达此地，栖身于岩石缝隙之中
Moths may seem a meagre meal for a bear,
飞蛾似乎并不足以填饱熊的肚子
but their bodies are rich in fat and can make all the difference in a bear's annual struggle for survival.
但它们身体内富含脂肪，直接关系到灰熊每年冬天的生存能力。

词汇解析

1.devoid of 没有；缺乏的
You could also move beyond that and identify yourself with pure oneness or consciousness, devoid of any particular individuality.
也可能超越那些，用纯粹的“单一性”或缺乏特殊个性的自觉意识来识别你自己。

2.fatten up 使肥胖
Half a million sandhill cranes pause on the Platte River in Nebraska to fatten up on corn waste, worms, and other food in nearby fields.
五十万只沙丘鹤在内布拉斯加州的普拉特河上停留，寻觅附近田里剩下的玉米、蠕虫和其它食物，给自己增加脂肪。

3.make all the difference 关系重大
A good concise cover letter can make all the difference when trying to land a new job.
一封好的简明求职信能够在寻找一份新的工作中关系重大。

视频及简介

欢迎来到极端的、岩石与冰雪的世界。我们将踏上最雄伟的山脉的旅程——从于低洼处隆起的出于形成期的山脉直道珠穆朗玛峰的顶部，发现某些神秘的生物迎接高山生活的挑战而诞生，其中，我们还将看到一些最罕见的现象如熔岩湖。