That naturally hits monoline insurance companies more than multiline insurance companies because they are more specialized and more vulnerable.

它对单线保险公司的冲击,自然要大于多线保险公司,因为它们的业务更单一也更容易受到影响

耶鲁公开课 - 金融市场课程节选

So you cannot use the formula once it hits the ground because once it hits the ground, the fundamental premise that a was a constant of -9.8 or -10 is wrong.

当物体落地以后,该公式就不适用了,因为当物体落地后,公式的基本前提——,加速度为常数-9.8或-10——就不成立了

耶鲁公开课 - 基础物理课程节选

Because on particle hits another and another and another.

原因在于粒子的连续碰撞。

哈佛公开课 - 幸福课课程节选