The tunnels threaten Stuttgart’s underground springs.

开挖隧道会威胁到斯图加特的地下泉。

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The Sea of Galilee is a unique body of water: the bottom part is salt water fed by underground springs, while the top layer is fresh water.

加利利海是一片独一无二的水域：底部是地下泉水形成的咸水，顶层则是淡水。

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Because the source of the 68-level Waterfall is underground springs, it keeps constant temperature all year round, while giant salamanders love to inhabit such homothermal rivers.

因68级瀑布的源头系地下泉，故四季恒温，珍贵的娃娃鱼就喜欢栖息生活在这种恒温的河流里。

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Characterised by porous limestone geology and countless underground springs, the region is a wildlife-filled paradise of turquoise rivers and lakes, forested hills and massive subterranean caverns.

BBC: Livin�� la vida Bonito

Most of South Africa's modern economic history springs from its underground resources.

FORBES: Hitting The Gas

Back at the press base, where the 60-strong media pack have to suffer saunas, open-air natural hot springs, and an underground disco, the antics of the tiny but dedicated British contingent are gradually endearing themselves to the Italian media.

BBC: Home-from-home comforts