So once we cover it, it will then be fair game to ask these photoelectron spectroscopy or these photoelectric effect questions using the wavelength of the electron.

所以一旦我们涉及到它，问及光电子能谱或者,用电子的波长问及,光电效应是一样的。

麻省理工公开课 - 化学原理课程节选

Equal justice, he tells us, requires equal taxation policy and he seems to be proposing a kind of consumption tax so that the rich, who consume more will have to pay their fair share.

再者，社会公平是建立在等同的税收政策上的,霍布斯还提议征收消费税,如此一来，富人就会因为消费得多，而缴纳相对公平的税收份额。

耶鲁公开课 - 政治哲学导论课程节选

We have 90 extension school students who are taking the course via distance education, so we have a huge group that will be joining us at the 2010 CS50 fair and the those photos you saw a moment ago depicted 2009's.

这里有90个来自哈佛开放学院的学生,他们正在通过远程教育来学习这门课程，所以参加2010年CS50课程的团体是很庞大的,刚才你们看到的图片显示的是,2009年的数据。

哈佛公开课 - 计算机科学课程节选