In a move away from his talk show's usual format, the TV host delivered an extraordinary five-minute lecture at the start saying why Oliver was doomed to failure.

这位主持人一改往日脱口秀的形式，节目一开始，他就先做了五分钟的演讲：奥利弗为什么注定失败。

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He informed us that French scientists had determined that the optimal length of a tour guide's lecture is seventy-five minutes.

他告诉我们法国科学家研究表明导游的最佳讲解时长是75分钟。

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Helping students achieve the five course challenges is a thorough set of lecture notes, complemented by class overviews and necessary handouts.

本课程网页有一套完备的课堂讲稿，辅以课堂讨论与课堂派发的讲义，可协助同学们通过本课程的“五大要求”。

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On Saturday, Mr Clegg will be paying homage to the left of his party, the social democratic group Social Liberal Forum, when he delivers the annual Beveridge lecture on the "five giant evils" - squalor, ignorance, want, idleness and disease.

BBC: A tough end to a tough week for Nick Clegg