Tourism is growing source of income for people in the region.
旅游事业是这个区域里日益增长的收入来源。
It was, however, the sole source of potable under water in the region.
但是，它是这一地区唯一的饮用水源。
Grass is the main vegetation of the source region, accounting for 79% of the whole region.
草地是江河源区主要覆盖植被，江河源区草地面积占土地面积的79%。
These glaciers are the source of most of the water in the region.
冰川是这个地区大部分水流的源头。
Objective To investigate the mutagenicity of drinking water and water source in a certain region.
目的探讨某地区各类饮用水及水源水致突变性。
Objective To investigate the mutagenicity of drinking water and water source in a certain region.
目的探讨某地区各类饮用水及水源水致突变性。
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