听力文本

A puma, the lion of the Andes.
美洲狮，安第斯山区的狮子
Pumas are usually solitary and secretive.
美洲狮通常独来独往，隐秘莫测
To see a group walking boldly in the open is extremely rare.
这么一大家子在光天化日之下外出实属罕见
It's a family, a mother with four cubs.
这个家庭由一只母狮和4只小狮组成

She has just one brief summer in which to teach them their mountain survival techniques.
母狮只能利用这个短暂的夏天教会小狮在山区生存的技能
Rearing four cubs to this age is an exceptional feat,
把4只小狮养到这么大是很了不起的业绩
but she does have an excellent territory, rich in food and water.
那是因为它有一片富饶的领地，食物和水都很充足
Although the cubs are now as large as their mother,
虽然小狮已长到和它们的母亲差不多大
they still rely on her for their food.
它们仍需要依靠母狮获取食物

词汇解析

1.in the open 在野外
This twister stayed in the open country, away from people or buildings, rotating at 120 mph but only moving at 5 mph.
该龙卷风停留在开阔的乡野，远离人群和建筑，以120英里的时速旋转，而仅以5英里的时速移动。

2.rely on 依靠，依赖
And all of these freedoms rely on one thing: tolerance.
所有这些自由都依赖于一样东西：宽容。

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。