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- As the winds rise and fall, swirl and eddy, so they pile the sand into dunes.
- 随着风的起落、侵蚀和旋绕,沙子被堆成了一座座沙丘
- These sand seas can be hundreds of miles across.
- 这些沙漠布景可宽达数百英里
- In Namibia, the winds have built some of the biggest dunes in the world.
- 在纳米比亚,风塑造了一些世界上最大的沙丘
- Star dunes like these can be 300 metres high.
- 这些巨型沙丘高达300多米
- Grains swept up the flanks are blown off the crests of the ridges
- 斜坡上吹起的沙粒,在沙丘顶部的边棱处飞扬
- so it's only the tops that are moving.
- 所以沙丘移动的部分只是顶部
- The main body of these dunes may not have shifted for 5,000 years.
- 这些沙丘的主体可能已有5000多年未曾移动
- Few rocks can resist the continuous blast of the sand-carrying wind.
- 岩石很难抵挡风沙持续不断的摧残
- These outcrops are standing in Egypt's White Desert.
- 这些石头如今矗立在埃及的白色沙漠中
- But they will not do so for much longer.
- 但它们也坚持不了多久
- They are being inexorably chiselled away and turned into more sand.
- 它们正被无情地凿碎,变成更多的沙粒
- Now lumps of heavily eroded rocks have been marooned in a sea of sand.
- 现在,这些严重侵蚀的石块已被放逐在沙海之中。
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陆地的表面大约30%部分是沙漠,这些地区虽然严重缺水,生态系统却异常的多样。揭开沙漠地区的生存秘密,体验这种动态系统中短暂的自然本性。
来源:可可英语 //m.moreplr.com/Article/201709/524167.shtml
重点单词 |
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eddy
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['edi]
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联想记忆
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单词eddy 联想记忆: 读:爱低(漩涡都是向下的-爱低)
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resist
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[ri'zist]
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联想记忆
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单词resist 联想记忆: re反,sist站-反站-反抗
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continuous
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[kən'tinjuəs]
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联想记忆
X
单词continuous 联想记忆: con全部+tin拿住+uous→连续不断的
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