更重要的是，这个软件只需要观察管理员进行一次操作就可以在其他的运行着不同软件的电脑上重复这些操作。
Crucially, the software just needs to watch an administrator perform this task once before being able to carry out the same job on computers running different software.
因为您不止一个页面上需要这样的地址组，您要在各个页面上重复操作，还有可能在不同的应用软件上重复此操作。
Because you need such an address block on more than one page, you repeat it on various pages, and maybe even in different applications.
在前一节中指出，在节点序列(比如重复元素)上只能应用删除操作。
In the previous section, you learned that only the delete operation can be applied to a sequence of nodes, such as repeating elements.
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