A vast desert of northern Africa extending east from the Atlantic coast to the Nile Valley and south from the Atlas Mountains to the region of the Sudan. During the Ice Age (about 50,000 to 100,000 years ago), the Sahara was a region of extensive shallow lakes watering large areas of vegetation, most of which had disappeared by Roman times. Introduction of the camel (probably in the first century a.d. ) led to occupation by nomadic tribes who moved from oasis to oasis in search of water.
撒哈拉沙漠：北非的一个大沙漠，东至大西洋沿岸，西至尼罗河河谷，南至亚特拉斯山脉，北至苏丹境内。冰川世纪时（大约50,000到100,000年以前），撒哈拉沙漠是一个有着大片植被的浅湖灌溉区，到罗马时代，大多数植被已经消失。骆驼的引入（大约在公元 1世纪）导致游牧部落从一个绿洲走向另一个绿洲寻找水源
撒哈拉沙漠是世界上最热(写成英语句子)
The Sahara is the hottest in the world
撒哈拉沙漠的英文信息（100词左右）
sahara desert
the sahara desert is the world’s largest desert area. it extends from the africa’s atlantic ocean side to the red sea and consists of the countries of morocco, algeria, tunisia (突尼斯), libya, egypt, mauritania (毛里塔尼亚), mali, niger（尼日尔）, chad（乍得）, and sudan. it is about 5,200 miles long. overall, the sahara desert covers 3,500,000 square miles.
the geography of the desert is varied. in the west, the sahara is rocky with varied elevation. it does contain underground rivers, which sometime penetrate the surface, resulting in oases.
the central region of the sahara has more elevation than the other areas, with peaks such as tahat. even though the area lacks rainfall, these peaks are snowcapped during the winter. the eastern part of the sahara, the libyan desert, is dry with very few oases.
the sahara’s climate is very hot and dry. although it is very hot during the day, it does become cold at night.
the sahara used to be a fertile area in which elephants, giraffes and other animals grazed. it is estimated that in 4,000 bc, the climate began to get drier. the fertile landscape dried up and the desert widened, creating the form that appears today.
(sd-agencies)
撒哈拉沙漠是世界上最热(写成英语句子)
你好！
Sahara is the hottest place in the word
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