Then you put something else that you know in your mind, which is that the highest point is the point when it's neither going up nor coming down.
然后你就想到了些东西,也就是说,最高点,就是那个既不上升也不下降的点
耶鲁公开课 - 基础物理课程节选
应用推荐
模块上移
模块下移
不移动