This gallery is part of a special news series on global water issues.

这个图册是关于全球水问题的物种新闻系列的一部分。

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This gallery is part of a National Geographic News series on global water issues.

图片是国家地理杂志有关全球水资源问题的新闻系列的一部分。

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Normally, the cumulated water in top cover is drained to cumulated water well by gravity drainage, in emergency situation, the water would be drained by the self-priming pump installed in gallery.

顶盖内积水正常情况下通过自流排水排至积水井，紧急状态下通过装在廊道内的自吸泵排水。

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The Valdstejnska jizdarna, which the National Gallery also uses, had about 20 centimeters (8 inches) of water in its basement.

UNESCO: Communication et information

Ilana Goor Museum: Home and gallery of Israeli artist and sculptor Ilana Goor, this museum is a jewel on the water.

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