Earlier this year, President Barack Obama's administration said neither that engagement nor U.S.sanctions had brought about democratic change and that Washington would move to pursue high-level meetings.

VOA: standard.2009.11.02

The interesting thing is that through time, as political winds change, these taxes have changed and they've gone up to some very high levels in the past in the United States and other countries.

有趣的是在不同时期,如果政策方向有所转变,税率也会改变,在过去的美国和其他国家,税率曾经相当高

耶鲁公开课 - 金融市场课程节选

So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.

所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。

麻省理工公开课 - 化学原理课程节选

"That the population is so high that there will be a major population crash, that we will run out of food unless we change our ways, this just turns out not to be truth."

VOA: standard.2010.01.23