这是比较简单的编码，但是安全性比较差，因为不能绝对保证用户没有手工删除过一个断接子组，所以会漏删编号较大的组。

This is easier coding, but less safe because there's no absolute guarantee that someone may not have deleted one of the breakout subgroups manually, so you miss deleting higher-numbered groups.

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对于那些过去一直认为非洲经济是一个漏桶的人们来说，国际货币基金组织的一份关于非洲大陆的调查报告会令人鼓舞很多。

For those used to thinking of Africa as a fiscal bucket with a hole in it, a new IMF report on the continent makes for a heartening read.

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早在1966年，随着计算机化的文字处理机(I.B.M.磁带式自动打印机)的出现，秘书们就开始担心机器会代替他们，他们不再需要因为漏打一个字母而重新再打一页。

As early as 1966, with the introduction of the first computerized word-processing system (I.B.M.’s Magnetic Tape Selectric Typewriter), secretaries were worrying that machines could replace them.

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