but in Me and Orson Welles McKay says the challenge was to rediscover the brash young man who would become the stage and screen icon: "I felt a tremendous responsibility toward him,especially because of his own mythology his own myth making,"

VOA: standard.2009.12.17

So let me challenge you with this: inside of these curly braces where I have put a comment with slash slash -- a "comment" means nothing here gets compiled, it's just for the human to read.

让我用这个来挑战你们：,在这些花括号里面，我通过双斜杠写入了一个注释,-一条“注释“在这里不会被编译,它只是用来我们阅读的。

哈佛公开课 - 计算机科学课程节选

And for me it's fun because I may not know the novel that you end up picking, and so it is a kind of challenge for me to take a novel that you've chosen and come to grips with it myself It may be one that I know.

我也觉得很好玩,因为我可能不知道你们最后选择的小说，所以对我来说,认真对待你们选的一本书很有挑战性,可能是一本我知道的书。

耶鲁公开课 - 1945年后的美国小说课程节选

So literary can sometimes be very abstract like mathematics, and therefore, if someone says make me a movie, showing me what the square of minus two means that is going to be a challenge.

文学有时候也可以很抽象,像数学，因此如果有人说,给我做一部电影吧,给我展示一下负二的平方,那将是一个挑战。

麻省理工公开课 - 电影哲学课程节选

For you or for me, it is not a challenge to walk around these cubes, or the audience or somebody from different points of view and recognize that they are really the same person.

对于我们这样的人，换个角度绕场行走，围着某个观众或者其他人去走,会认识到他们是同一个人。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选