The address is u-s-a-l-e-a-r-n-s dot o-r-g.

VOA : special.2009.01.15

He urged revival of the slave-trade in the late 1850s, and he developed a theory of what he called warranteeism--w-a-r-r-a-n-t-e-e-I-s-m.

他促成了十八世纪五十年代后期,奴隶交易的复苏,还自己发明了一套理论,名为抵押品主义

美国内战与重建课程节选 : 耶鲁公开课

And that's going to be equal to negative z effective squared times r h over n squared.

有效的z的平方,乘以RH除以n的平方。

化学原理课程节选 : 麻省理工公开课

That's m-a-c-a-r-o-n.

VOA : special.2010.04.12