I think what part of Sustain Dialogue does and just being in community with people it also challenges you. -It does.

我觉得，“持续对话“所做的部分活动,和与你不同的人在一起交流,这很有挑战性，-的确。

普林斯顿公开课 - 人性课程节选

The wilderness allows us the opportunity to experience the challenges that come with unpredictable weather, and saying "How do I deal with it?"

荒野给了我们机会,来感受这些挑战,比如难以预测的天气,让我们自己想一想“该怎么做？“

普林斯顿公开课 - 人性课程节选

And that created enormous challenges, of our capability and systems and process to deal with this tremendous growth and expansion.

这也为我们带来了极大地挑战，公司的能力和机制与,快速的成长和扩张不符。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

I wrote my first book--I already talked about that, Pioneering Portfolio Management--that deals with the challenges that face institutional investors.

我写的第一本书,我已经提到过了,《机构投资的创新之路》,讨论了机构投资者所面临的挑战

耶鲁公开课 - 金融市场课程节选

Some of the challenges that you see here I mentioned before, so there are problems with drought, with pests, with temperature changes and the like.

我之前提到的,你们所见的这些挑战,如干旱问题,虫害问题以及温度变化之类的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The approach of this course, with all its challenges,is the opposite.

本课程的做法，正好相反。

哈佛公开课 - 幸福课课程节选

Now, the problem, or one of the challenges with clinical trials of vaccines is that you have to enroll a lot of patients into clinical trials because only a few are going to get sick in any case, only 20 out of 100,000.

现在的问题是,这也是疫苗临床试验的挑战之一,临床试验必须包括足够多的病人,毕竟只有一小部分人会被传染,十万人里面只有二十人被传染

耶鲁公开课 - 生物医学工程探索课程节选