Jiang also accused developed nations of abandoning the principle reached in earlier accords, which require them to cut greenhouse gas emissions, but do not make the same requirement of developing countries.

VOA: standard.2009.12.16

So it was very important that we keep the motivation high so that they were not in the compassion of time and the requirement set for very high-stress jobs climbs under the way.

使这一动机足够强烈,是十分重要的,这样不会过分在乎时间,高压力工作带来的要求,也就不那么重要了。

麻省理工公开课 - 媒体、教育、市场课程节选

So, in my freshmen year, there's like a science requirement that we have to take

所以，大一的时候，我们必须参加一个科学的课程，

考试考砸了怎么办 - SpeakingMax英语口语达人

"But then,at the top of the pyramid, you have a small-but-growing group of entrepreneurs in China who see that greening their business is not just a legal requirement, nor a responsible act to do.

VOA: standard.2010.02.24

But in fact, logically speaking at least, variability, although it's a requirement for unpredictability, doesn't guarantee unpredictability.

但实际上，至少在逻辑上讲，可变性虽然是不可预见性的必要条件，但是不可预见性却不是必然。

耶鲁公开课 - 死亡课程节选

You sign up for your human subjects requirement they put you in front of a computer screen and then they tell you, "Oh, just sit in front of the computer screen " and then we'll ask you some questions."

你报名参加人体被试实验,然后他们会让你坐在电脑前，and，then，you—,给你指导语，“请坐在电脑屏幕前面,屏幕上会显示一些要求你回答的问题“

耶鲁公开课 - 心理学导论课程节选