听力原文

The panda's paw is surprisingly un-bear-like, too.
熊猫的爪子也与熊爪有很大的不同。
It's flexible, with an enlarged wrist bone which allows it to grasp and manoeuvre the bamboo with a dexterity and precision that a monkey would be proud of.
它的爪子很灵活，腕骨很大，能准确地抓住并灵活地控制竹子，令猴子都羡慕。
Twisting the bamboo leaves into a cigar shape makes them easier to munch. Hungry pandas once roamed across vast tracts of bamboo-rich forest that covered much of China's heartland.
把竹叶弄成雪茄形状，便于它们咀嚼。饥饿的熊猫曾流浪在广阔丰饶的竹林当中，这些竹林曾覆盖中国的中心地带。

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重点讲解

重点讲解：
1. allow sb. to do sth.
允许；容许；准许；
eg. That will allow the machine to pick up the movements of a player.
它能够让机器记录玩家的动作。
eg. Don't allow a minor irritation in the workplace to mar your ambitions.
不要让工作中的一点烦心事打击了你的雄心抱负。
2. be proud of
骄傲的；自豪的；得意的；
eg. That's a beautiful piece of work. You should be proud of it.
那件作品非常漂亮，你应当为之自豪。
eg. His father was quite naturally very proud of him.
他父亲自然为他感到无比骄傲。
3. a tract of/tracts of
（土地等的）大片；
eg. A vast tract of land is ready for development.
一大片广阔的土地可待开发。
eg. They cleared large tracts of forest for farming, logging and ranching.
他们清除了大片的森林以经营农耕、采伐与畜牧。