The Lady's talent has to be spent in order to fulfill the covenant of the trust between the master and the servant.

小姐的才能必须要利用,按主人和仆人之间的信任契约去做。

耶鲁公开课 - 弥尔顿课程节选

And you don't want to do another thing but you have to go to the gym.

虽然你不想做其他任何事情，但是你却必须去健身房。

so that 课堂 - SpeakingMax英语口语达人

But,in those days in high school-- but anyway, there we go--you'd go and do these things, and it would be a big sort of public spectacle,a spectacle.

不过那时候的高中--无论如何,就是那样--你必须去做这样的事情,那是个大型的公共活动

耶鲁公开课 - 1871年后的法国课程节选

Let's say they're telling you, you have to do something, you have to do something.

假设他们告诉你，你必须去做某事，一定得做某事。

The thing is 课堂 - SpeakingMax英语口语达人

But in order to do so, you have to use terms like "punishment" and "reward" and "reinforcement" in such a vague way that in the end you're not saying anything scientific.

但如果你要这样去做，你就必须将惩罚，奖励“,强化之类的术语概念模糊化,最终你所作出的解释便毫无科学性。

耶鲁公开课 - 心理学导论课程节选

More generally speaking, we might say, they're subject to deterministic laws... that, as physical objects, it's true of them that they must do what the laws of physics and laws of nature require that they do.

我们甚至可以这样说,它们受制于决定性的法则,即,作为物理实体,它们必须按照,物理定律和自然法则的要求去做

耶鲁公开课 - 死亡课程节选