River, eastern and northeastern Africa. The longest river in the world, it is about 4,132 mi (6,650 km) long from its remotest headstream (which flows into Lake Victoria) to the Mediterranean Sea. After leaving the lake, it flows generally north through Uganda, The Sudan, and Egypt. Its major tributaries — including the Al-Ghazal (Gazelle) River, the Blue Nile, and the Atbara River — join it before it enters Lake Nasser near the Egypt-Sudan border. Below the Aswan High Dam, which impounds the lake, it continues northward to its delta near Cairo, where it empties into the Mediterranean. The first use of the Nile for irrigation in Egypt began when seeds were sown in the mud left after its annual floodwaters had subsided. It has supported continuous human settlement for at least 5,000 years, and networks of canals and waterworks have been built since the 19th century. The Aswan High Dam, built in 1959 – 70, provides flood protection, hydroelectric power, and a dependable water supply for both crops and humans. The Nile is also a vital waterway for the transport of people and goods.
中文翻译写汉字太多，自己对着字典做吧，对英语也是一种提高，对吧。
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