总而言之，检验演讲是否成功的标志在于，是否抓住了听众的注意力，是否解答了他们思想上的一两个问题，是否传递了新的信息。

Generally speaking, whether a speech has engaged the audience, has solved one or two of their questions, or has passed on new messages are critical standards measuring its failure or success.

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Scheme具有极高的开发效率，并且相当容易学习，它能使学习它的人从一开始就将注意力放到编程思想上，而不是停滞在学习繁琐的语法上。

Programming in scheme, the development efficiency can be enhanced enormously. However, it is very easy to master and use scheme, because its syntax could be learned quickly.

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思想上，我们放松了注意力，停下来没继续做让我们获得领先的那些事情。

Mentally, we lose focus, stop doing the things that put us up.

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