求翻译：Each sign had two message frames publishing the distance to the end of the work zone and estimated travel time, along with three alternative routes是什么意思？

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悬赏分：1 - 离问题结束还有

Each sign had two message frames publishing the distance to the end of the work zone and estimated travel time, along with three alternative routes

问题补充：

匿名	2013-05-23 12:21:38 每个符号有两个消息帧的距离发布

匿名	2013-05-23 12:23:18 每个标志有两个消息帧的距离发布

匿名	2013-05-23 12:24:58 每个标志有二个消息框架出版距离

匿名	2013-05-23 12:26:38 每个标志已经发布到距离的两个消息帧

匿名	2013-05-23 12:28:18 每个标志有两则消息出版距离的框架到

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