以一定的间隔周期，大约每3个小时，Google分析处理日志文件中的数据。
At some regular interval, approximately every 3 hours, Google Analytics processes the data in the logfile.
如果符合条件的消息不存在，操作并不会等待消息的出现。它只是简单地用一个新的刷新间隔周期来组装一个刷新响应并将它返回给调用者。
If no message exists, the operation does not wait around for one; it simply prepares another refresh Response with a new refresh interval period and returns that back to the caller.
最后的版本发布在《Eco Weekly》上，隔周出版，可供下载和打印，无须支付费用。
The final versions are published on Eco weekly a biweekly publication that can be downloaded and printed at no cost.
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