Pair Programming: All production code is written by two programmers sitting at one machine. Essentially, all code is reviewed as it is written.

编程对子：所有代码都是坐在同一台机器前的两个程序员共同编写的，因此所有代码在编写的同时就完成了复查工作。

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But for only a couple, or two right, but a pair of number one, such as, hair, such as white, should be embedded file down the first child.

但对子仅一对时，或虽有两对，但一对为番头牌，如中、发、白之类，则应先拆嵌档搭子。

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