If the burst does not penetrate the surface, the only other hazard will be from ground or water shock.

如果爆炸没有穿透表面，那么地面或水面冲击是唯一能够带来伤害的。

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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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Excess water at the surface is siphoned down to replenish ground water, which is then pumped back up for use as necessary.

地表多余的水被虹吸下去，用于补充地下水，然后地下水被重新抽上来用于必要的用途。

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Mirra deep cleans any type of in-ground pool surface and water without using the pool's filtration system, hoses or booster pumps, which results in energy cost savings from running these pool systems less frequently.

ENGADGET: iRobot flaunts the Mirra 530 pool cleaning robot, sends the Looj 330 abroad

The islands natural surface and ground-water resources can only cover about 10% of the demand at present.

UNESCO: MEDIA SERVICES

In a number of areas the ground remains frozen beneath the surface, which means excess water will run into rivers instead of being absorbed by the soil.

BBC: Flood warnings issued after heavy rain and snow thaws