返回的每一行保存在数据结构中，可以在SELECT和ENDSELECT关键字之间处理它们，直到没有更多行返回为止。

Each returned row is saved in the data structure and can be processed between the SELECT and ENDSELECT keywords until no more rows are returned.

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其他的一些功能有，文件历史、标签窗口、语言关键字帮助、行编辑命令和透明度的支持。

Among the other features are file history, tabbed Windows, language keyword helper, line edit commands and transparency support.

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在第一行我们使用了val关键字来声明一个只读变量book。

The first line USES the val keyword to declare a read-only variable named book.

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