An army is a large organized group of people who are armed and trained to fight on land in a war. Most armies are organized and controlled by governments.
双语例句
例：
Perkins joined the Army in 2000.
珀金斯于2000年加入了陆军。
例：
The British and American armies invaded Sicily.
英国和美国的陆军入侵西西里岛。
例：
He's an army officer.
他是一名陆军军官。
2.?[C 可数名词] 大群
An army of people, animals, or things is a large number of them, especially when they are regarded as a force of some kind.