In this article, we assemble the service providers created in the third article to use their capabilities in the method of another service provider.
在本文中，我们将第3篇文章中创建的服务提供者集合在一起，以另一个服务提供者的方法来使用它们的功能。
The third part is of vital importance in query tuning, because it provides us with a great deal of useful information, such as the data access method and the join method that the query used.
第三部分对于查询调优是至关重要的，因为它提供了大量有用的信息，例如查询所用的数据访问方法和连接方法。
The three-parameter bind() method is similar to the two-parameter method used in Listing 1, with the third parameter being the collection of attributes you just authored.
带有三个参数的 bind() 方法与 清单 1 中使用的带有两个参数的该方法类似，第三个参数是刚刚创建的属性集合。
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