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 Mexico's underwater caves face pollution risk |
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日付: 13/05/2012 06:05 - によって: bambamx - 382 ビュー - カテゴリ: さまざまな
The country's incredible cave-like sinkholes, once revered as gateways to the underworld by the Mayans, may be forced to close its passages ...
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日本の 
