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  1. hard hat

    英式

    • n.
      a rigid protective helmet, as worn by factory and building workers.;a worker who wears a hard hat.
    • noun: hard hat, plural noun: hard hats

    • 釋義

    名詞

    • 1. a rigid protective helmet, as worn by factory and building workers.
    • a worker who wears a hard hat.
    • a reactionary or conservative person.