merchant ship

名词 merchant ship:

1. a cargo ship
   同义词：bottom, freighter, merchantman

1. An official document issued by an allied foreign government to a ship, especially a neutral merchant ship in time of war, authorizing it to enter and travel through certain waters freely.
   中立船证由联盟的外国政府颁发给船只的一种官方文件，尤指战时授权中立商船在特定水城内自由进出和航行的文件