So that you will come away with a sense of what you can do, what you can't do, and what kinds of things you should use to tackle complex problems.

因此你们才能对,你们能做的事儿，不能做的事儿,和用何方法去,解决棘手问题有一个基本概念。

麻省理工公开课 - 计算机科学及编程导论课程节选

That really is the question we are wrestling with and, of course, behind it all is can we seek any historical information from Homer's poems at all?

这确实是一个很棘手的问题,不管怎样,我们是否能从荷马史诗中,得出当时的史实呢

耶鲁公开课 - 古希腊历史简介课程节选