In a speech at Carnegie Mellon University, President Obama referred to the Gulf oil spill in making the case that it is time, as he put it, to "aggressively accelerate the nation's transition to a clean energy economy."

VOA: standard.2010.06.14

You take a material like silver and put it in a glass case and that's the definition of a meter.

你拿某种材料,比如银,把它放进玻璃柜里,那是一米的定义

耶鲁公开课 - 基础物理课程节选

If we have a higher z effective, it's pulled in tighter, we have to put in more energy in order to eject an electron, so it turns out that that's why case 2 is actually the lowest energy that we need to put in.

而如果有效核电量更高，原子核的束缚也就更紧，我们不得不输入更多的能量来打出一个电子，这就是第二种情况,所需要输入的,能量更少的原因。

麻省理工公开课 - 化学原理课程节选

And it is only the creation of the sovereign for Hobbes, endowed or possessed with absolute power, that is sufficient to put an end to the condition of perpetual uncertainty, anxiety and unrest that is the case of the natural condition.

对霍布斯而言,只有给君主，赋予绝对的权力，人们才足以结束,对这漫长的未知的恐惧，和对不安生活状态的疑虑,这才是现有条件下我们该做的。

耶鲁公开课 - 政治哲学导论课程节选

I didn't put that down, so just in case The Greek word synkresis means "a mixing together."

这个我没写在讲义上，我写黑板上,希腊语Synkresis意思是“融合“

耶鲁公开课 - 新约课程节选

So in the first case of this first bond here that I've put in a square, what type of a bond is this, is the sigma or pi?

在这第一个键里,我用方框把它标出来了，这个键是什么类型的，sigma还是π？

麻省理工公开课 - 化学原理课程节选