Many people found the objects and displays helped explain a subject that is hard to understand.

VOA: special.2009.12.01

So there's a lot of power in this, both engagement and both allowing students to get conceptual understandings of things that are very hard to understand and they're abstract.

所以这是很强大的，不论是参与性,还是使学生能更好,理解那些,很难的概念,很抽象的概念。

麻省理工公开课 - 媒体、教育、市场课程节选

So it is very hard to understand P's silence in this regard, if it stems entirely from the post-exilic, priestly circles.

很难理解P资源在这一方面的缄默，如果它来源于流放后时期，牧师圈子。

耶鲁公开课 - 旧约导论课程节选

Sometimes,financial news can be hard to understand.

VOA: special.2010.04.30

I actually thought it was hard to understand, just what was happening, the action part of the story. It might have been that I read it too quickly. Uh huh. Harder than "Menelaiad" to understand? No.

事实上，我认为它很难理解，就是到底发生了什么，即故事中的动作部分，也可能是我读得太快的缘故,所以不太理解罢，比《梅尼洛斯》更难懂吗，不是的。

耶鲁公开课 - 1945年后的美国小说课程节选

"I mean it's hard to even understand how biology was a science as we would recognize it today.

VOA: special.2009.12.01

And they're hard to understand because they're linguistic.

它们很难被理解,因为它们有语言性。

麻省理工公开课 - 电影哲学课程节选

It was hard for him to fully understand what he saw in her expression.

VOA: special.2009.09.05

In Renaissance Italy they started writing insurance policies-- I read one of the insurance policies, it's in the Journal of Risk and Insurance-- and they translate a Renaissance insurance policy and it's very hard to understand what this policy was saying.

在文艺复兴时期的意大利,人们开始编写保单,我看过其中一份,刊登在《风险和保险杂志》上,他们翻译了一份文艺复兴时期的保单,但是很难理解那份保单到底想说什么

耶鲁公开课 - 金融市场课程节选

Because if you just have random bones lying around, it's hard for someone to come in and look at it and understand what the animal looked like in its entirety.

VOA: standard.2009.12.08

But finally, Reiner says, well, thank you for visiting us, it's all very wonderful, but you know our audience would really like to know; it seems like a simple question but it's awfully hard to understand, but how can a great, big, enormous, heavy thing like this airplane get off the ground?

但最后 雷纳说到,谢谢你的来访,太棒了,但你知道吗,我们的观众非常想知道,这问题貌似简单,但却很难让人明白,问题是,像这么一个巨大且沉重的飞机,是如何飞起来的呢

耶鲁公开课 - 古希腊历史简介课程节选

Lee Smith says it has always been hard for Americans to understand exactly why peace in the Middle East is so elusive, and why violence and terrorism are so pervasive and persistent in the Arab world.

VOA: standard.2010.03.18

To use an ancient expression from the 1970's, which only John and I will appreciate, it's really hard to grok what that code is doing, to understand what it's trying to make happen.

我和约翰都会同意，70年代的一句话来概括，那就是很难理解编码的内容，以及它想要完成的工作。

麻省理工公开课 - 计算机科学及编程导论课程节选