If an event or service call needs to be logged, create a logging task at the beginning and end of each service where logging is required.

如果某个事件或服务需要被记录，可以在每个服务需要记录的起始和结束处创建一个日志任务。

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For each logging call, we need to determine whether or not the message is to be sent to the log file.

对于每个日志调用，都需要确定这条消息是否将发送到日志文件中。

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This leads us back to the point of making your logging concise and logging enough information to trace the call through the system.

这又将我们带回这个点：保持日志简洁，记录足够信息以跟踪调用通过系统。

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Switchboards and call logging systems are synchronised using the speaking clock.

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The software firm says that while RIM is very supportive, it is too hard to make money on its call-logging application, which it sells exclusively through BlackBerry's App World store.

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