Definition: the part of a country's armed forces which is trained to operate at sea Level: B2
我父亲曾在海军担任军官。
My father served as an officer in the ___navy.
他决定毕业后加入海军。
He decided to join the ___navy after finishing school.
在海军服役期间，他游历了许多不同的国家。
During his years in the ___navy, he traveled to many different countries.
