Understanding how to generate and analyze performance reports will help you understand system behavior more accurately.

理解怎样生成和分析性能报告，将会帮助您更精确地理解系统行为。

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Basically, when we invoke the Mirror Image pattern, we analyze the behavior of an external entity and then create its likeness in our own system.

当我们援用镜像映象模式时，我们基本上是先分析某一外部实体的的行为特征，然后在我们自己的系统中创建它的相似体。

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This is because the behavior diffuses into the target system and is difficult both for humans to pin down and for tools to analyze.

这是因为行为混入到了目标系统中，让人很难把握或者用工具分析。

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