"My understanding is that, from 2005 to 2020, China can cut four giga-tons to four-point-five giga-tons of CO2 emissions - that is huge,".

VOA: standard.2009.11.27

To get down to it, you have to cut away what is not true, what is inflated, beside the point, excess, ornament.

更直接点，你们要去掉不真实的，除了这点还有膨胀的，过量的和装饰的。

耶鲁公开课 - 现代诗歌课程节选

z And what you need to remember is if the z 8 is equal to eight or greater, such as oxygen being the cut-off point, this sigma 2 p orbital is actually lower in energy than the pi 2 p orbitals, the molecular orbitals.

你们要记住如果,等于或者大于，就像O是分界点，这时sigma2p轨道,比π2p轨道能量更低。

麻省理工公开课 - 化学原理课程节选

Nothing is free. So,the reason I make that point is, you cannot ask local elected officials to raise teacher salaries and cut taxes and balance the budget and increase roads.

VOA: standard.2009.03.20

If I took this same restriction enzyme and tried to cut the chromosomal DNA of a sickle patient, it wouldn't cut at that point because the wrong sequence is there.

而如果我用同样的限制酶,去切割病人的染色体DNA,那该酶是不会起作用的,因为基因序列不对

耶鲁公开课 - 生物医学工程探索课程节选