krem·lin /ˈkrɛmlən/
  城堡,克里姆林宮
  Krem·lin n.
  1. The citadel of a town or city; especially, the citadel of Moscow, a large inclosure which contains imperial palaces, cathedrals, churches, an arsenal, etc. [Russia]
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  Kremlin
       n 1: citadel of Moscow, housing the offices of the Russian
            government
       2: citadel of a Russian town