1、從空中俯瞰，這座建筑成正五邊形，故名“五角大樓”。2、參謀長聯席會議3、國防部長辦公室和陸軍部4、海軍部和空軍部

熱心網友

Difficult!答案僅供參考:1. from the airborne bird's eye view, this place constructs thepentagon, therefore "Pentagon".2. joint chief of staff3. secretary of defense office and war department4. naval department and air force department