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  1. case-hardened

    • adj.
      (of a material) having a hard surface;(of iron or steel) having been given a hard surface by being carburized
    • 釋義

    形容詞

    • 1. (of a material) having a hard surface case-hardened sandstones
    • (of iron or steel) having been given a hard surface by being carburized a case-hardened steel anvil
    • made callous or tough by experience a case-hardened politician