听力原文

The Tibetan brown bear, a close relative of the grizzly, tries to dig the pikas out of their burrows.
西藏的棕熊是灰熊的近亲，试图把鼠兔从洞里挖出来。
Even hard-frozen soil presents little obstacle to a determined bear. The wily Tibetan fox is quick to spot any opportunity.
即使棕熊很难从冻得坚硬的土地里挖出鼠兔来，狡猾的藏狐可绝不放过任何可能的机会。
True to form, the crafty fox claims the prize. A combination of inaccessibility, and ancient traditions which forbid hunting, means that in some parts of the plateau, wild animals have remained relatively undisturbed, even today.
一如既往，狡猾的狐狸得到了它的战利品。由于动物难以捕获并且有世代相传的禁止猎杀的传统，这使得即使在今天在高原的一些地方，野生动物都相对没有被打扰。
But in those areas which are within reach of motor vehicles, these historical safeguards have been undermined. This change is illustrated in the fortunes of the chiru.
但是在那些汽车可以到达的地方，那些传统的保护已经渐渐被打破。这种变化从藏羚羊的身上得到了体现。
A century ago, millions migrated across the plateau. Unfortunately for the chiru, its fur, known as "shahtoosh", or "king of wools", is highly prized.
一个世纪以来，上百万的藏羚羊在高原上迁徙。不幸的是被称为“沙图什”或者“羊毛之王”的藏羚羊的毛皮被认为有很高的价值。
In recent decades, poachers have been able to venture deep into the wilderness, killing thousands of chiru.
近几十年以来，偷猎者冒险深入荒原，捕杀了成千上万头藏羚羊。

重点讲解

重点讲解：
1. true to form
一如既往；和平常一样；
eg. Before the train had left the outskirts of London he behaved true to form and began a conversation.
一如往常，列车还没驶出伦敦郊区，他就开始和别人聊起天来。
eg. True to form, she kept her guests waiting for more than 90 minutes.
和平常一样，她让客人们等了 90 多分钟。
2. within reach of
（伸手）可及之距离；（可接受的）范围；
It is located within reach of many important Norman towns, including Bayeux.
它邻近许多重要的诺曼城镇，包括贝叶。
The clothes they model for Littlewoods are all within easy reach of every woman.
他们为利特尔伍兹服装店展示的那些服装每个女人都穿得起。
3. venture into
冒险尝试；
eg. He enjoyed little success when he ventured into business.
他冒险涉足商界后几乎没有取得什么成功。
eg. Don't venture into the jungle without a guide.
没有向导，不要冒险到丛林里去。