B2 [ S, + sing/pl verb ] the part of a country's armed forces that is trained to operate at sea海军
More examples
They both enlisted in the navy a year before the war broke out.
My grandfather used to reminisce about his years in the navy.
The navy plans to move its Tridents.
The U.S. Navy entered combat in South Vietnam in 1964.
The navy's largest ship was destroyed in the attack.
dark blue深蓝色(的),海军蓝(的)
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