It sounds easy, but senior engineer Gwak Byung-man admits there are daunting technical challenges.

VOA: standard.2010.01.04

If you had a course in probability and statistics, then you'll find it easy to follow, but it's self-contained again.

如果你们学过统计学或者概率论,你们会比较容易理解,也需要你们独立学习

耶鲁公开课 - 金融市场课程节选

So, numbers count, but it's not an easy one-to-one question, various issues will determine who comes out ahead.

所以,人多力量大,但这不是简单一对一的问题,很多因素决定了谁将更胜一筹

耶鲁公开课 - 古希腊历史简介课程节选

I take this to be an undeniable fact, but this is easy for us to say - it's easy for us to say that it's Milton's memory which is the fount of so much of the poem's erudition.

我认为这是无可辩驳的，但我们可以轻易地说,我们可以说那是弥尔顿的记忆,作为了这部诗篇如此广博知识的源泉。

耶鲁公开课 - 弥尔顿课程节选

It was not easy to bring them together but when they had a common goal that brought them-- that caused the interconnection and then the contact led to moral feeling.

要让他们互相接触并不容易,但当他们有了共同目标-,他们就会互相联系,从而接触就产生了道德情感。

耶鲁公开课 - 心理学导论课程节选

So, if you're looking back, say, from the end of the nineteenth century, it's not easy to see, but you can see these-- don't ever think that history runs on railroad tracks, and all you need is the timetable to show when modernization shows up.

所以,当你回顾历史,从十九世纪的末尾开始,虽然不太容易,但还是可以看出...,别以为历史是在固定轨道上行进的,别以为你只用拿时刻表,就知道新时代什么时候来临

耶鲁公开课 - 欧洲文明课程节选

It's never--it probably wasn't quite that easy but the invading side goes for something that the other side will have to defend and that determines when the fighting takes place.

可能不会这么简单,但当入侵方为了某一目进行侵略,被侵方就不得不防守,这就决定了战争的爆发时间

耶鲁公开课 - 古希腊历史简介课程节选