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dune

noun
🔊/djuːn/
🔊/duːn/
(also sand dune)
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  1. a small hill of sand formed by the wind, near the sea or in a desert（风吹积成的）沙丘
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    Topics Geographyb2
    Oxford Collocations DictionaryDune is used before these nouns:
    • buggy
    Dune is used after these nouns:
    • sand
    See full entry
    Word Originlate 18th cent.: from French, from Middle Dutch dūne; related to Old English dūn ‘hill’ (related to Dutch duin ‘dune’), perhaps ultimately of Celtic origin and related to Old Irish dún and obsolete Welsh din ‘fort’.