软体的上半部从右到左分别是编辑、书架、增加分页和分页列表。

The top portion from right to left are "Edit" button, "Shelf" button, "Add Page" button and Pages list.

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清单3的代码设置了Rails显示线路的分页列表时需要的实例变量。

The code in Listing 3 sets up the instance variables rails needs to show a paginated list of trails.

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这两者可能不同，因为您可以更改每次返回多少个匹配结果以及要返回哪批匹配结果，哪个结果利于对冗长的结果列表分页。

The two may differ because you can change how many matches are returned each time and which batch of matches to return, which is useful for paginating long lists of results.

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