To avoid contamination, Wells in the Bengal Basin can be drilled into deep layers that were oxidized during the last ice age, in which the water is free of arsenic, Berg says.

为了防止被污染，孟加拉盆地的水井钻入了在上一个冰河时期被氧化的深层地层中，这一层的水是不含砷的，伯格说。

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Water from three glaciers empties into Lituya Bay, which is over 700 feet deep in places.

水流从三条冰河泻入Lituya海湾，其中深逾700英尺的地方有好几处。

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A huge amount is in polar ice, which adds up to 1.7 per cent. A further 1.7 per cent lies in ground water deep beneath the land's surface.

有大量的淡水存在于两极的冰盖中，占到水总量的1.7%，还有1.7%是地下水。

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