I served two more years on active duty, with one year overseas.

我服务了两年多的现役，其中一年在海外。

While attending school, I was called to active duty during the Vietnam war.

当我在医务学校时，我被派往越战那里服现役。

There are currently thought to be over 4, 000 robots on active duty in Iraq.

当前大约有4000个左右的机器人正在伊拉克执行任务。

For an Active Duty Soldier, length of service can range from two to six years.

对于现役军人来说，服役期为二至六年。

He'd been gone for six months on active duty-he'd been certain that she'd be happy to see him.

宗介已经服役离家6个月了——很确信小要见到他时一定很开心。