19 篇文章
and the biggest source of sand and dust in the entire world.
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and the biggest source of sand and dust in the entire world. 也是全世界最大的沙尘源

But it is the only source of water,
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But it is the only source of water, 可是这是唯一的水源

The source of these toxic fumes lies several miles below.
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The source of these toxic fumes lies several miles below. 这些毒气的源头位于地下几英里处

These flooded shafts are the region's only source of open fresh water.
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These flooded shafts are the region's only source of open fresh water. 这些水潭是整个地区 唯一的露天淡水资源

finding a regular and reliable source of food.
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finding a regular and reliable source of food. 即找到长期而可靠的食物资源

Insects seem irresistibly drawn towards the source
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Insects seem irresistibly drawn towards the source 昆虫总是禁不住光源的诱惑

Eventually, over 4,000 miles from its source,
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Eventually, over 4,000 miles from its source, 最终 在经过4000英里的流程之后

the rivers are not only a vital source of drinking water,
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the rivers are not only a vital source of drinking water, 河流不仅是唯一能解渴的重要水源

the source of all fresh water.
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the source of all fresh water. 这便是所有淡水的来源