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BNC: 22644 COCA: 17129
chromium
noun [U] /ˈkrəʊmiəm/
  1. a chemical element that is a hard white metal. Its symbol is Cr and it is used for making alloys and for putting a hard shiny covering on other metals. (金属)铬
     Synonyms and related words
    Metals: aluminium, aluminum, barium...

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