army/'ɑːmɪ $ ɑːr-/

n.

➊[the ~] a country's force fighting on land

➋ a large organized group of soldiers who are trained to fight on land in a war

➌ a large group of sb/sth

n. 〖复-mies/-mɪz/〗

➊[the ~]军队，陆军：[the army + v. 单/复] The army is in a high state of readiness. 全军高度戒备。

◇The army are helping to fight the floods. 军队正协助抗洪。

◇My uncle joined the army when he was 17. 我叔叔17岁就参军了。

◇Her son is (或serves) in the army. 她儿子在服兵役。

➋ [C] 部队：Both the armies suffered heavy losses in the battle. 双方的部队在这次战斗中都损失惨重。

◇an army officer 军官

➌ [C] 一大群：[an army of sb/sth] An army of ants are marching across the road. 一大群蚂蚁正爬过马路。

◇She has an army of supporters. 她有一大群支持者。

构词源自arm （武装）

用法后接is或are的区别

army常与the连用构成the army，用作集体名词；把the army看作一个整体时，后接动词的单数形式，但看作多个个体时，后接动词的复数形式。