calcareous
calcareous[kalˈkɛːrɪəs]adjective- containing calcium carbonate; chalky
含碳酸钙的;白垩的
■(Ecology)(of vegetation) occurring on chalk or limestone
(生态)(植被)长在白垩(或石灰岩)上的
语源- late 17th cent.: from Latin calcarius (from calx, calc- 'lime') + -eous
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