These are the questions that are asked by what's called hermeneutics, a difficult word that we will be taking up next week.

这些是所谓诠释学提出的问题，诠释学是个难词，我们下周再讨论。

耶鲁公开课 - 文学理论导论课程节选

When the difficult time comes, they will try to survive by themselves.

一旦遇到困境，他们会选择自保。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

There's a wonderful book by my former colleague, Geoffrey Parker, called The Spanish Road, which talked about how difficult it was for the Spanish to get troops all the way to the Netherlands.

我之前的同事 杰弗里·帕克,写了一本非常好的书,叫做《西班牙之路》,讲述了西班牙是怎么样艰苦地,将军队派遣到荷兰去的

耶鲁公开课 - 欧洲文明课程节选