No underground pipe-and-line-works shall be laid and buried within the planned red line of expressway and fast lane of Grade a highway.

在高速公路的规划红线内和一级公路的快车道内，不得埋设地下管线。

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Checked up with the demonstration of the Northeast-expressway incorporated company, the early-warning method works in effect.

通过对东北高速公路股份有限公司进行的实证分析，证明是有效的预警方法。

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