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BNC: 43928 COCA: 26691

caldera

noun
/kælˈdeərə/
/kælˈderə/
(specialist)
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  1. a very large hole in the top of a volcano, usually caused by an eruption破火山口(巨大碗口形火山凹地)
    Word Originlate 17th cent.: from Spanish, from late Latin caldaria ‘boiling pot’.
BNC: 43928 COCA: 26691
BNC: 43928 COCA: 26691
BNC: 43928 COCA: 26691

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