"You know the thickness, tolerances of wood has to be exactly right for the right tone, and volume of a soundboard has to be measured exactly, and that's done mostly by ear.

VOA: standard.2010.07.06

In the case here, tha t I just illustrated with the little cart going down the valley, would be exactly the same with regular energy, the equilibrium state is one of lowest energy, right.

在现在所考虑的情况下,我刚才所描述的小车沿着山谷下行，结论会像能量判据一样，平衡态是能量最低的态。

麻省理工公开课 - 热力学与动力学课程节选

If stock price option -if stock options tend to be issued as announced by the company later, just before stock prices go up, there's no way that that can be right because nobody can know exactly when the stock price is going to go up.

如果股票期权价格...,如果就像公司事后宣称的一样,公司恰好是在股价上涨之前,发行的股票期权,这是不可能做到的,因为没有人可以确切知道,股票价格何时会上涨

耶鲁公开课 - 金融市场课程节选

If the DNA is synthesized exactly correctly, so each one gets the right copies of DNA, what other differences could there be?

如果DNA的合成精确无误,每个子细胞都有一套相同的DNA,那会有什么其他的不同点呢

耶鲁公开课 - 生物医学工程探索课程节选