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时间：2014-04-24 07:42:00

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（单词翻译）

 This is a patas monkey, military looking with a fine mustache. It's at home in Savannas2, where it’s too dry for jungle trees. Monkeys have been leaving the trees for millions of years, but we are the only ape to do so. Some of what makes us special comes from living in the open; the same is true for patas monkeys. Long grass is tricky3 if you're short, so they are often seen standing4, and even walking on their back legs only. When we left the trees, we stood up on our back legs too. The theory is it freed our hands to carry things, like tools, babies, weapons; and civilization grew from there.

 
The African Savanna1 liberated5 our hands, but open grassland6 is a very hard place to survive. Fruits and flowers are scarce. There is nowhere to escape and there are some very dangerous predators7. Baboons8 have grown larger than forest monkeys and 80 or so baboons stick together for defense9. They are wary10 and aggressive. The big males will often go on the attack. The young are helpless. Most animals here can run from birth. Gazelles and baboons feed together, both watching for predators. The baboons make do with tough plants, insects and grass mainly.  And the gazelles benefit from the baboons as their allies. But from time to time, they pay a terrible price. When our ancestors left the trees, we changed too, and became more predatory and dangerous than the apes and monkeys we left behind in the forest.

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1 savanna bYbxZ     
n.大草原
参考例句：
  • The savanna is also the home of meat-eaters--the lion,leopard,and hyena who feed on the grasseaters.大草原也是食肉动物的家乡--狮子、豹、鬣狗--它们都是以草食动物维持生命的。
  • They sped upon velvet wheels across an exhilarant savanna.他们的马车轻捷地穿过一片令人赏心悦目的大草原。
2 savannas 8e6e2e0a16919eb825681014ced032b7     
n.（美国东南部的）无树平原( savanna的名词复数 )；（亚）热带的稀树大草原
参考例句：
  • Therefore the jungles and the savannas know of no juvenile delinquency! 因此，丛林和荒原里没有“少年犯罪。” 来自辞典例句
  • My soul flits away into the virgin forests and to the savannas. 我的灵魂飞向森林中的处女地和广漠的平原。 来自互联网
3 tricky 9fCzyd     
adj.狡猾的，奸诈的；(工作等)棘手的，微妙的
参考例句：
  • I'm in a rather tricky position.Can you help me out?我的处境很棘手，你能帮我吗？
  • He avoided this tricky question and talked in generalities.他回避了这个非常微妙的问题，只做了个笼统的表述。
4 standing 2hCzgo     
n.持续，地位；adj.永久的，不动的，直立的，不流动的
参考例句：
  • After the earthquake only a few houses were left standing.地震过后只有几幢房屋还立着。
  • They're standing out against any change in the law.他们坚决反对对法律做任何修改。
5 liberated YpRzMi     
a.无拘束的，放纵的
参考例句：
  • The city was liberated by the advancing army. 军队向前挺进，解放了那座城市。
  • The heat brings about a chemical reaction, and oxygen is liberated. 热量引起化学反应，释放出氧气。
6 grassland 0fCxG     
n.牧场，草地，草原
参考例句：
  • There is a reach of grassland in the distance.远处是连绵一片的草原。
  • The snowstorm swept the vast expanse of grassland.暴风雪袭击了辽阔的草原。
7 predators 48b965855934a5395e409c1112d94f63     
n.食肉动物( predator的名词复数 )；奴役他人者（尤指在财务或性关系方面）
参考例句：
  • birds and their earthbound predators 鸟和地面上捕食它们的动物
  • The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》
8 baboons 2ea074fed3eb47c5bc3098d84f7bc946     
n.狒狒( baboon的名词复数 )
参考例句：
  • Baboons could break branches and leaders. 狒狒会折断侧枝和顶梢。 来自辞典例句
  • And as nonprimates, they provoke fewer ethical and safety-related concerns than chimps or baboons. 而且作为非灵长类，就不会产生像用黑猩猩或狒狒那样的伦理和安全方面的顾虑。 来自英汉非文学 - 生命科学 - 医学的第四次革命
9 defense AxbxB     
n.防御，保卫；[pl.]防务工事；辩护，答辩
参考例句：
  • The accused has the right to defense.被告人有权获得辩护。
  • The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。
10 wary JMEzk     
adj.谨慎的，机警的，小心的
参考例句：
  • He is wary of telling secrets to others.他谨防向他人泄露秘密。
  • Paula frowned,suddenly wary.宝拉皱了皱眉头，突然警惕起来。

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