1·Without stirrups horse and rider are, in terms of force, separate entities; lances can be used from horseback, but only by throwing or stabbing, and mounted warriors gain only height and mobility.
没有马镫，马和骑手在力量上是独立的实体；长枪可以从马背上使用，但只能通过投掷或刺杀，骑兵只能获得高度和机动性。
2·He was the best rider in his age with the most elegant profile on horseback.
他是他所生活的那个时代最优秀的骑手和马背上最优雅的形象。