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TOEFL BNC: 3656 COCA: 5053
copper
noun /ˈkɒpə(r)/
singularcopper
pluralcoppers
  1. 1
    [U] a chemical element that is a red-brown metal. Its symbol is Cu and it is used especially for making wire or pipes. (尤用于制造电线或管子的)铜,紫铜,红铜

    a copper pipe/pan/kettle 铜管/铜锅/铜壶

    Her hair was the colour of copper. 她的头发呈紫铜色。

     Synonyms and related words
    Metals: aluminium, aluminum, barium...
  2. 2
    [C] informal old-fashioned a police officer 警察
     Synonyms and related words
    Police officers: bobby, cadet, captain...
  3. 3
    [C] old-fashioned a coin of low value made of copper or bronze 铜币
     Synonyms and related words
copper
adjective /ˈkɒpə(r)/
copper
  1. red-brown in colour 铜色的;红棕色的
     Synonyms and related words
    Words used to describe specific colours: alabaster, amber, amethyst...

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