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英语听力:自然百科 探索世界奥秘之Wild Africa - Deserts(浩瀚沙漠) Unit14

时间:2020-03-04 17:53来源:互联网 提供网友:nan   字体: [ ]
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The Arabian camel--not even a native , was domesticated1 in the deserts of Asia and brought to Northern Africa as a means of transport. In the past , Tuareg nomads2 used camels to move slaves, gold and ivory between West Africa and the Mediterranean3. Today their caravans4 still trade in salts, dates and millet5.

The Sahara has long been a frontier between Asia and Africa. But there are European pioneers here too--red foxes, which scrape a living 

on the Northern fringes of this vast desert.

Though much of the Sahara is uninhabitable, there are a few special places where life can thrive. The Ennedi Mountains in Chad harness a little more moisture from clouds than lower-lying areas enough to support tiny pockets of Savanna6. Here rock hyraxes survive on the leaves of acacia trees, a scene more typical of the African plains. These green islands are relics7 of an older world, one which is slowly vanishing with the march of the desert sands.

The Sahara , as we know it today, is only 2, 000 years old, the product of a rapidly drying climate in North Africa. But our ancestors also had a hand in this change. By over-cultivating marginal lands, and intensively grazing livestock8. Before, things were very different. Try to imagine this land flooded by the ocean, swathed in forest and savannah, swept by mighty9 rivers.

Ennedi Gorge10 once fed a vast tributary11 of the Nile. Today all that remains12 are a few precious pools, crucial watering holes for passing caravans of camels. In just 10 minutes of drinking , these remarkable13 animals can put on a third of their body weight in water. It's enough to carry them for well over 100 kilometers to the next oasis14.

Tuareg:西撒哈拉和中撒哈拉的柏柏尔人

trade in :a method of buying something new by giving an item you own as part of the payment for it 抵价购物

scrape a living :to only just earn enough money to provide yourself with food, clothing and a place to live 勉强够维持生活

hyraxes: a kind of animal 蹄兔

have a hand in: 干予, 参与, 插手


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1 domesticated Lu2zBm     
adj.喜欢家庭生活的;(指动物)被驯养了的v.驯化( domesticate的过去式和过去分词 )
参考例句:
  • He is thoroughly domesticated and cooks a delicious chicken casserole. 他精于家务,烹制的砂锅炖小鸡非常可口。 来自《简明英汉词典》
  • The donkey is a domesticated form of the African wild ass. 驴是非洲野驴的一种已驯化的品种。 来自《简明英汉词典》
2 nomads 768a0f027c2142bf3f626e9422a6ffe9     
n.游牧部落的一员( nomad的名词复数 );流浪者;游牧生活;流浪生活
参考例句:
  • For ten years she dwelled among the nomads of North America. 她在北美游牧民中生活了十年。
  • Nomads have inhabited this region for thousands of years. 游牧民族在这地区居住已有数千年了。 来自《简明英汉词典》
3 Mediterranean ezuzT     
adj.地中海的;地中海沿岸的
参考例句:
  • The houses are Mediterranean in character.这些房子都属地中海风格。
  • Gibraltar is the key to the Mediterranean.直布罗陀是地中海的要冲。
4 caravans 44e69dd45f2a4d2a551377510c9ca407     
(可供居住的)拖车(通常由机动车拖行)( caravan的名词复数 ); 篷车; (穿过沙漠地带的)旅行队(如商队)
参考例句:
  • Old-fashioned gypsy caravans are painted wooden vehicles that are pulled by horses. 旧式的吉卜赛大篷车是由马拉的涂了颜色的木质车辆。
  • Old-fashioned gypsy caravans are painted wooden vehicles. 旧时的吉普赛大篷车是涂了颜色的木质车辆。
5 millet NoAzVY     
n.小米,谷子
参考例句:
  • Millet is cultivated in the middle or lower reaches of the Yellow River.在黄河中下游地区,人们种植谷子。
  • The high quality millet flour was obtained through wet milling.采用湿磨法获得了高品质的小米粉。
6 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。
7 relics UkMzSr     
[pl.]n.遗物,遗迹,遗产;遗体,尸骸
参考例句:
  • The area is a treasure house of archaeological relics. 这个地区是古文物遗迹的宝库。
  • Xi'an is an ancient city full of treasures and saintly relics. 西安是一个有很多宝藏和神圣的遗物的古老城市。
8 livestock c0Wx1     
n.家畜,牲畜
参考例句:
  • Both men and livestock are flourishing.人畜两旺。
  • The heavy rains and flooding killed scores of livestock.暴雨和大水淹死了许多牲口。
9 mighty YDWxl     
adj.强有力的;巨大的
参考例句:
  • A mighty force was about to break loose.一股巨大的力量即将迸发而出。
  • The mighty iceberg came into view.巨大的冰山出现在眼前。
10 gorge Zf1xm     
n.咽喉,胃,暴食,山峡;v.塞饱,狼吞虎咽地吃
参考例句:
  • East of the gorge leveled out.峡谷东面地势变得平坦起来。
  • It made my gorge rise to hear the news.这消息令我作呕。
11 tributary lJ1zW     
n.支流;纳贡国;adj.附庸的;辅助的;支流的
参考例句:
  • There was a tributary road near the end of the village.村的尽头有条岔道。
  • As the largest tributary of Jinsha river,Yalong river is abundant in hydropower resources.雅砻江是金沙江的最大支流,水力资源十分丰富。
12 remains 1kMzTy     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
13 remarkable 8Vbx6     
adj.显著的,异常的,非凡的,值得注意的
参考例句:
  • She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
  • These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。
14 oasis p5Kz0     
n.(沙漠中的)绿洲,宜人的地方
参考例句:
  • They stopped for the night at an oasis.他们在沙漠中的绿洲停下来过夜。
  • The town was an oasis of prosperity in a desert of poverty.该镇是贫穷荒漠中的一块繁荣的“绿洲”。
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