The president campaigned hard, urging people to vote even if they voted against him, hoping a big turnout would validate his national security and economic programs.

VOA: standard.2009.04.10

When you buy high and sell low it's really hard to generate returns, even if you do it with great enthusiasm and great volume.

当你高价买入低价卖出时,是很难产生回报的,不管你有多大交易热情或有多大交易量

耶鲁公开课 - 金融市场课程节选

So I mean, people can be really smart or have skills that are directly applicable but if they don't really believe in it, then they're not going to really work hard and they're not going to even if they're smart guy who doesn't have the relevant experience, they're not going to care enough to develop the relevant experience in order to succeed.

就比如说，一个人不仅聪明,而且也有拿来即用的技能,但是如果对于自己的事业没有认同感，他就不会,百分之百的付出,就算他是属于,缺乏经验但智力超群的那类人，他也不会有意识地,为了成功而积累自身经验。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

comes from flawed reports of what people eat, because in order to know what people eat you have to ask them, and even if people are really trying hard to be truthful, it's not the easiest thing to do.

这些信息来自于关于人们饮食缺陷的报告,因为你必须询问人们,吃了什么,尽管人们会尽量实事求是,但这很难做到

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In fact, even if you haven't had a biology class it's hard to be alive in 2008 and not know something about DNA; it's become such an important part of our lives.

实际上,即使你们没有上过生物课,也不可能活在当下却对DNA一无所知,它已经与我们的生活密不可分

耶鲁公开课 - 生物医学工程探索课程节选