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1. Oxford Dictionary

   base metal

   • IPA[ˈbeɪs ˌmɛtl]

   英式

   • n.
     a common metal that is not considered precious, such as copper, tin, or zinc

   • noun: base metal, plural noun: base metals

2. • 釋義

   n.

   名詞

   • 1. a common metal that is not considered precious, such as copper, tin, or zinc cutlery was available in silver or base metals most are made of base metal
3. • 更多解釋

   base metal

   • IPA[ˈbās ˌmed(ə)l]

   美式

   • n.
     a common metal that is not considered precious, such as copper, tin, or zinc: cutlery was available in silver or base metals most are made of base metal

   Oxford American Dictionary