Bottom line: Drive responsibly at or below the speed limit.

建议底线：保证在限速或限速以下行驶。

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Some negligence in design about discharge method of reheating furnace limit the speed and the output of PQF mill line.

由于再加热炉出料方式设计上的原因， 限制了PQF轧机生产线的轧制节奏，从而影响产量。

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And the dynamic characteristics of trains flow in speed limit section of main-line railway are analyzed.

随后对干线铁路中限速区段交通流的特性进行了分析。

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Network Rail said the "down" line from Birmingham was currently closed while the "up" line had a 50mph speed limit.

BBC: Landslip disrupts rail services near Bristol