1、outriders的意思是：骑士护卫，摩托护卫。
2、例句：Eight police outriders escorted the ministers car.。意思是：八名驾摩托车护卫着的小汽车。The presidents car was flanked by motor-cycle outriders。意思是：总统的汽车由摩托车警卫护行。