Compare the actual performance of the product or service to pre-launch projections.
比较下产品或服务的实际表现与发布之前的最初的设计情况。
In addition, compare Firebug output with your actual perceived performance.
另外，将Firebug输出与实际的性能进行比较。
In addition, compare Firebug output with your actual perceived performance.
另外，将Firebug输出与实际的性能进行比较。
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