单词	sinkhole
释义	sinkhole /ˈsɪŋkhəʊl / noun A cavity in the ground, especially in a limestone formation, caused by water erosion and providing a route for surface water to disappear underground.The enclosed depressions are complex forms of dolines or sinkholes, which act as centripetal drainage basins.... Karst is an area of irregular limestone in which erosion has produced fissures, sinkholes, underground streams, and caverns. The wells at Chichén Itzá are actually large limestone sinkholes - known in Spanish as cenotes (underground pools) - and they are one of the singular aspects of the site.
随便看	conspiratorial conspiratorialism conspiratorialist conspiratorially conspire conspirer con spirito Const. constable Constable, John constabulary Constance, Lake constancy constant constantan Constantine Constantinople constantly constant of proportionality Constanza Constanţa constative constellate constellation consternate

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