n. an organization of military vessels belonging to a country and available for sea warfare
n. 海军, 海军人员, 海军军力, 烟蒂
1. The navy protects our country from threats at sea.
海军保护我们的国家免受海上的威胁。
2. He joined the navy to serve his country.
他加入海军以服务他的国家。
3. The navy has many ships and submarines.
海军拥有许多舰船和潜艇。