当从应用程序代码中使用SPARQL时，避免把数据集绑定到查询是一个好习惯——例如，它允许把同一查询重用在不同的图上。
Avoiding binding the dataset to the query is good practice when using SPARQL from application code — it allows the same query to be reused with different graphs, for instance.
相反，它是一组可以在应用程序中使用的实用工具——从类到标记。
Instead, it's a set of utilities — from classes to tags — that you use in your applications.
它提供了一个绑定系统，不再需要大量粘合代码来从模型获取数据或者在应用程序视图中使用它。
It provides a binding system that eliminates the need for much of the glue code, or code for taking data from models and using it in the views of the application.
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