If someone removes the index, the program will not work unless the programmer makes changes.
如果某人删除了索引，程序就不能工作，除非程序员进行更改。
Transform if (not condition) into unless (condition).
将if (not条件)变换成unless(条件)。
Absolutely have no way ending if not being alas, which have what unless!
绝对没有出路，如果不结束被唉，这有什么，除非！
Absolutely have no way ending if not being alas, which have what unless!
绝对没有出路，如果不结束被唉，这有什么，除非！
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