假设一个应用程序由两个线程组成，而这两个线程都尝试访问同一个对象。
Imagine an application that consists of two threads, both trying to access the same object.
此类提供了一组类或一组单例（singleton）对象实例，在一个JAX-RS应用程序内包括所有的根级别的资源和提供程序（由 @Provider注释的类）。
This class provides a set of classes, or a set of singleton object instances, that include all of the root-level resources and providers (classes annotated with @Provider) in a JAX-RS application.
PHP函数返回一个XML响应，后者由xajax对象返回到客户机应用程序。
The PHP functions return an XML response that is returned to the client application by the xajax object.
例如，当mytri应用程序加载时(参见图1)，应当会看到一个指向TriathlonController对象的链接，该对象是在您运行generate - all命令时由Grails生成的。
For instance, when the mytri application loads (see Figure 1), you should see a link corresponding to the TriathlonController object that Grails created when you ran the generate-all command.
接收者的标签，由应用程序提供的一个整形数值用来标识你的应用程序中的栏目对象。
The receiver's tag, an application-supplied integer that you can use to identify bar item objects in your application.
由应用程序的根对象开始遍历对象树，而不是强迫每个对象保持一个对它的引用的轨迹（像COM中一样），来判定一个对象是否可达。
The GC determines whether an object is reachable by walking the object tree from the application's root object instead of forcing each object to keep track of references to it, as in COM.
由应用程序的根对象开始遍历对象树，而不是强迫每个对象保持一个对它的引用的轨迹（像COM中一样），来判定一个对象是否可达。
The GC determines whether an object is reachable by walking the object tree from the application's root object instead of forcing each object to keep track of references to it, as in COM.
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