cor·vette /kɔrˈvɛt/
  古代軍艦的一種
  Cor·vet Cor·vette n.  Naut. A war vessel, ranking next below a frigate, and having usually only one tier of guns; -- called in the United States navy a sloop of war.
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  corvette
       n : a highly maneuverable escort warship; smaller than a
           destroyer