1. 海军
A country's navy consists of the people it employs to fight at sea, and the ships they use.
navy
e.g. The government announced an order for three Type 23 frigates for the Royal Navy yesterday...
政府昨天宣布为皇家海军订购3艘23型护卫舰。
e.g. Her own son was also in the Navy.
她自己的儿子那时也在海军。
2. 海军蓝;深蓝色;藏青色
Something that is navy or navy-blue is very dark blue.
navy
e.g. I mostly wore black or navy trousers.
我大部分时间穿黑色或深蓝色裤子。
e.g. ...a navy-blue blazer.
海军蓝的便上装