It had all been so very simple, he thought.

VOA: special.2009.04.11

Seems very simple, but took Beethoven a long time to iron all this out and make this perfect melody, the prototypical melody in a way.

似乎很简单,但是花了贝多芬很长时间来琢磨,最后做出这段完美的旋律,这段典范旋律

耶鲁公开课 - 聆听音乐课程节选

Right now at this point in our course, whenever you have a problem where there is some body and someone says, "Write all the forces on it", what you have to do is very simple.

现在在我们这个课程里,如果你遇到一道题目,题目给了你一个物体,并要求你,"写出该物体所受的所有力",你要做的其实很简单

耶鲁公开课 - 基础物理课程节选

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

That's why molecular biology, one of the reasons why it's turned out to be such a powerful tool, because if you can think creatively you can find all different ways to using these very simple principles to recombine molecules, to make unique new DNA sequences.

这就是分子生物学,如此有用的原因之一,因为如果你有创造力,你可以用各种方法,运用这些简单的原理来重组分子,创造独特的DNA新序列

耶鲁公开课 - 生物医学工程探索课程节选