紧接着研究者研究了不同方式的道歉的作用是怎么样的，从最简单的对不起，言语真诚的道歉到保证以后一定改正的决心。

The researchers then assessed how different methods of apologising worked - from a simple sorry, to a sincere-sounding apology, to promises to reform in the future.

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具体而言，有改正误文、乙正倒文、增补脱文、删除衍文、保存异文等作用。

Such as correcting mistakes of texts, putting right the reversal words, supplementing the missing words, deleting the unwanted words, saving the different words and etc.

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