merchant ship

n. 商船

例句与用法：

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