The election commission also said it hinged its decision on skepticism that any democratic vote could take place in the midst of the region's current political crisis as Somaliland President Dahir Riyale attempts to maintain his grip on power.

VOA: standard.2009.09.07

I can't sell myself into slavery any more than I can take somebody else's life or take someone else as a slave by force.

不能将自己变卖为奴隶,我也不能剥夺他人生命，或胁迫他人成为奴隶。

耶鲁公开课 - 公正课程节选

Once you can take one derivative, you can take any number of derivatives and the derivative of the velocity is called the acceleration, and we write it as the second derivative of position.

只要你能求一阶导数,你就能求任意阶的导数,速度的导数被称为"加速度",我们把它写成位移的二阶导数

耶鲁公开课 - 基础物理课程节选

If Freud's argument for death, that is to say, none of us believe we're going to die, was any good, the argument that none of us believe meetings ever take place without us would have to work as well.

如果弗洛伊德对死亡的说法，也就是，人都不相信自己会死的说法是正确的，那么就是说没有人相信,自己不在场的会议举行这件事也是正确的。

耶鲁公开课 - 死亡课程节选