He talks about the nobility of the poem, the force from within it being equal to the force that might be applied from without.

他认为诗歌的高贵，是指诗歌内部的力量,也可以运用到诗歌外部。

普林斯顿公开课 - 人性课程节选

First one says, if you knew the force acting on any body, without going into what caused the force, then you may set that force equal the mass times acceleration of the body.

第一部分是,如果你知道作用在任一物体上的力,无论这个力的来源是什么,都可以令力等于质量乘以物体的加速度

耶鲁公开课 - 基础物理课程节选

You cannot have two vectors equal without exactly the same x component, exactly the same y component.

你不能说两个矢量相等,如果它们的 x 分量不完全相同,或者 y 分量不完全相同

耶鲁公开课 - 基础物理课程节选