1、make a rear guard for the procession
為行進隊伍殿后

2、The rear guard of an armed force.
后尾部隊某支軍事力量的后衛(wèi)部隊

3、By now, the rear guard had entered the valley as well.
現(xiàn)在，后衛(wèi)已經(jīng)進入了山谷的。

rear guard翻譯