rear guard

汉语翻译

英语解释：

名词 rear guard:

1. a detachment assigned to protect the rear of a (retreating) military body
   同义词：rearguard

例句：

1. A reconnaissance or patrol unit that moves ahead of an advance party or guard, or that follows a rear guard.
   尖兵在一群前进的士兵或卫兵前面移动的侦察或巡逻的单位，也指尾随一支殿后的卫队