safe-con·duct /ˈsefˈkɑn(ˌ)dəkt/
  安全通行權
  Safe-con·duct n.  That which gives a safe passage; either (a) a convoy or guard to protect a person in an enemy's country or a foreign country, or (b) a writing, pass, or warrant of security, given to a person to enable him to travel with safety.
  Safe-con·duct v. t. To conduct safely; to give safe-conduct to. [Poetic]
  He him by all the bonds of love besought
  To safe-conduct his love.   --Spenser.
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  safe-conduct
       n : a document or escort providing safe passage through a region
           especially in time of war [syn: safeguard]