1. The headwaters and wetlands along the railway line are to be specially protected to avoid desertification in the headwaters areas, shrinkage of wetlands, deterioration of grasslands and water pollution that might be caused by the construction. 
   保护江河源头水源和沿线湿地，避免因施工引起水源区沙化、湿地萎缩、草场退化和水质污染。
2. the largest lake in Africa and the 2nd largest fresh water lake in the world; a headwaters reservoir for the Nile River. 
   非洲最大的湖，世界上第二大的淡水湖；是尼罗河的上游水库。
3. Central Revolutionary Base Area 
   中央革命根据地
4. computer local area network 
   计算机局部通信网
5. Datong Coal Mine Area 
   大同矿区

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• 1. 河源地区
  headwaters 水源; 河源...headwaters area 河源地区...headwaters region 河源区
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