There is no default finder target policy, thus find looks for an instance in all slices by default.
由于没有默认的查找定向策略，因此，find会默认地在所有片内查找一个实例。
Such pools can be queried for an instance of the class type, as given in the previous example about pools.
可以查询此类对象池以获得类类型实例，如前面关于池技术的示例中所述。
Simulate the testing of the local authorization for an instance-level operation (without the user ID and password).
模拟实例级操作(没有用户ID和密码)的本地授权测试。
Under extreme conditions, it is possible that you may not be able to activate these plug-ins for an instance of Firefox.
在极端条件下，您可能不能激活Firefox实例中的插件。
When all file descriptors for an instance are closed, the resources and underlying object are freed so the kernel can reuse them.
当关于某实例的所有文件描述符都关闭时，资源和下层对象都将释放，以供内核再次使用。
When the total private-sort memory consumption for an instance reaches this limit, the memory allocated for additional incoming private-sort requests is considerably reduced.
当实例的总私有排序内存消耗量达到这一限制时，为其它进入的私有排序请求而分配的内存会大大减少。
The four lines of code at the bottom of Listing 1 prove that no matter how many times you ask for an instance of the ConnPool pool class, it will always return the same object.
清单1底部的四行代码则证明无论请求ConnPool池类的一个实例多少次，它都会返回相同的对象。
By putting together a backup and recovery strategy for an instance, you can potentially avoid having to do a complete operating system restore when faced with a compromised instance.
通过为实例准备备份与恢复策略，可在遇到实例损坏问题时，不必进行整个操作系统恢复。
Contains options that specify whether the persistence provider should keep or delete the state information for an instance in the persistence store after the instance completes.
包含一些选项，这些选项指定持久性提供程序在实例完成之后是应将实例的状态信息保留在持久性存储中，还是应将该信息删除。
Destructors cannot have parameters, they cannot have accessibility modifiers, and they cannot be invoked explicitly. The destructor for an instance is invoked automatically during garbage collection.
析构函数不能有参数，不能有访问级别修饰符，不能被显式调用。实例的析构函数在垃圾收集时自动调用。
For an instance document to be valid, all assertions must evaluate to true.
实例文档要想有效，所有断言的计算结果都必须是true。
For an instance document to be valid, all assertions must evaluate to true.
实例文档要想有效，所有断言的计算结果都必须是true。
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