A country's navy consists of the people it employs to fight at sea, and the ships they use. 海军
noun [集合/集体]海军;深蓝色;舰队
Her own son was also in the navy. 她自己的儿子也曾在海军里。
adjective [原级]深蓝色的
Something that is navy or navy-blue is very dark blue. 深蓝色的 • When I was a fashion editor, I mostly wore white shirts and black or navy trousers. 当时尚编辑的时候,我大多数时间穿白衬衫和黑色或深蓝色裤子。
-nav- nav , nau = ship 表示“船”, naut引申为“海员”navy n. 海军(nav+y)