System failure, you can also follow the line color quickly and accurately find and troubleshooting, with signs clear, easy to understand, simple construction, and so on.

系统出现故障时，也可以循着管路色标快速准确地查找和排除故障，具有标志明晰、简单易懂、施工简便等特点。

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When a fault occurs in power system, the relevant relay will operate and send out trip order to clear the faulted transmission line or other parts.

当电力系统发生故障时，系统中的保护装置动作，将故障线路或元件切除。

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And we need a criminal justice system that scores a clear and heavy line between right and wrong.

BBC: Riots: David Cameron's Commons statement in full

The program provides a two-category drug system in an attempt to draw a clear line between therapeutic medications and banned substances in an attempt to keep horsemen from being punished for legal medications that remain in a horse's system before a race.

WSJ: Calif. horse owners want multi-state doping rules