Template method pattern of GOF and the realization of template method pattern in back tracing algorithm are introduced.

在此介绍采用GOF的模板方法模式及采用回溯算法的模板方法模式的设计与实现。

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Dany ran her hand down his back tracing the line of his spine. His skin was smooth beneath her touch almost hairless. His skin is silk and satin.

丹尼将手沿着他的脊骨拂过他的脊背，他的皮肤手感细滑如丝绸锦缎，绝少毛发。

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You can see that only by tracing a particular family line, possibly back to the 14th century or beyond, will you discover which version of a surname is yours.

你可以看到只有通过追溯一个特定的家族谱系，可能追溯到14世纪或更早，你才能发现哪个版本的姓氏是你的。

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And tracing back where it came from can be really hard.

然后去查找问题来源,可能会很困难。

麻省理工公开课 - 计算机科学及编程导论课程节选

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