But it's only an effective vaccine in the context where you have people who can go to the doctor's office, or to an urgent care, some kind of medical facility, three times, reliably, at a specified period of time.

但为了保证接种效果,人们必须亲自去诊疗室,或者在急诊室里,使用一些医学设施辅助接种,还需要接种三次,它只在一段时间内有效

耶鲁公开课 - 生物医学工程探索课程节选

that might have been applied in more... more efficient ways to society.

我们本来可以更有效率地利用这些时间，做对社会更有用的事。

选美大会，很不错 - SpeakingMax英语口语达人

You want to spend your time and energy pursuing the most inefficiently priced asset classes because there's an enormous reward for identifying the top quartile venture capitalist and almost no reward for being in the top quartile of the high- quality bond universe.

你应该投入所有的时间和精力,去追逐最不能有效定价的资产,因为在那里才能通过一流的风投经理人,获得巨额的投资回报,而在债券市场,即使债券优质,经理人一流,回报微乎甚微

耶鲁公开课 - 金融市场课程节选

What has been found over the last 10 years and a little bit longer is the most effective way of actually dealing with a rising levels of depression in our culture, with individual depression or anxiety is actually not to that is important as well.

过去10年多时间的研究发现,处理我们不断增加的抑郁病例,个体的抑郁或焦虑，最有效方法是,这点也很重要。

哈佛公开课 - 幸福课课程节选