Take for example, the six missing paragraphs.If they are separated from her by a couple of complex search-and-replaces, they can be as difficult to reclaim by Undo as they are to rekey.

• 再以丢失的6个段落为例，如果她想用几个复杂的查找替换来操作，则和通过撤销来恢复一样困难，因为她还是要重新键入一遍。