受金融危机和法国人不友好名声的影响，来法游客人数有所下降，对此巴黎市旅游局向市民提出了一个简单的要求：微笑。

Faced with a fall in tourist Numbers due to the financial crisis and a reputation for unfriendliness, the Paris Tourist Board has made a simple request of the city's residents: smile.

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Because if you did what I suggested with the list, the time to look up the key would be linear in the length of the list. You'd have to look at each element until you found the key.

字典是用一种很神奇的，叫做散列法的算法,来实现的，后面我们将,会学到一点关于。

麻省理工公开课 - 计算机科学及编程导论课程节选

Okay. Having said that and pointing out the advantages and disadvantages of notation let's plunge in then to a discussion of it.

好的,既然我们已经提到,并指出了记谱法的优势和劣势,那接下来我们就来对它进行一番讨论

耶鲁公开课 - 聆听音乐课程节选

All right, let me just go through one numerical example of a calorimetry calculation, OK.

好，让我们来做一个量热,法计算的例子，我不会把所有的。

麻省理工公开课 - 热力学与动力学课程节选