On this guy, I have 10 from the left 10 acting this way, 4 acting that way.

对这个物体,受到一个 10 牛的从左向右的力,10牛的力朝这边,4牛的力朝那边

耶鲁公开课 - 基础物理课程节选

But the difficulty is, if you take your left flank and move it out here so you can flank this guy, one of two things has to happen to your army.

但困难的是,如果你把左翼移到这里,你可以进攻敌人的侧翼,你的军队会面对下面两种情况

耶鲁公开课 - 古希腊历史简介课程节选