Identifying a single purpose in life feels really hard.

就说出那么一个人生目标是很难的。

We have but one aim and one single, irrevocable purpose.

我们只有一个目标， 一个唯一的、不可撤销的目标。

And all this data is collected for a single purpose: detecting heart attacks as they occur.

所有这些数据都是为了一个目的而收集的：在心脏病发作时检测它们。

And yet, I believe that, at the center of it all, all this complexity serves one single purpose, one fundamental question: how do we make meaningful choices?

然而，我相信，在这一切的中心所有这些复杂性都是为了一个单一目的，一个基本问题——我们如何做出有意义的选择？

" I am like this torch, Ser Davos. We are both instruments of R'hllor. We were made for a single purpose—to keep the darkness at bay. Do you believe that" ?

" 我就好比这火炬，戴佛斯爵士。我俩都是拉赫洛的工具。我俩存在的目的只有一个——阻挡黑暗。你明白吗？"

But in any case, the whole college course will be unified and dominated by a single interest, a single purpose — that of so understanding human life as to be ready and equipped for the practice of it.

但无论如何，整个大学课程将统一并由一个单一的兴趣、一个单一的目的所支配——理解人类生活，以便为实践它做好准备和装备。