现役军人的英文：
active army

参考例句：

We still have no proof that he's active military.
我们依然没有证据证明他是现役军人。

active是什么意思：
adj. 活跃的，积极的；现行的；主动的
n. 积极分子

She is an active participant in this activity.
她积极参与这项活动。

They are union actives.
他们是工会积极分子。

contamination activity
污染放射性

He took an active part in the extracurricular activities in the school.
他积极参加学校的课外活动。

The students take an active part in the school activities.
同学们都积极参加学校组织的各项活动。

army是什么意思：
n. 军队；陆军；军团；大群；团体

a standing army
常备军,5. 固定的,不能移动的,6. 【印】(版面)排好后保留的,n.1. 站立[U]2. 站立处[C]3. 身份;地位;名望[U]4. 名次表[P]5. 持续时间[U]

The army policed the conquered city.
军队管制这个被占领的城市。

The general directed the army to attack.
将军指挥军队进攻。

The army was called in to quash the revolt.
军队被调来镇压叛乱。

Array the army against the enemy.
列阵对敌。