本文叙述的一种显示告警电路能以不同彩色灯光信号指示出工业仪器检测结果合格与否，以确保工业生产的正常进行及产品质量合格。
This paper describes a warning circuit which can display with three colour signals whether the measuring result of industrial instruments is right or not to ensure the normal production.
交通信号灯并不特别令我苦恼，因为绿色实际上看起来像白色，与红色灯相比反差很大。
Traffic lights don't generally trouble me since their green looks actually white, a far cry from their red.
现行铁路灯光信号显示是用不同颜色灯光或灯光组合给出不同的命令。
The current colour signal lights used in railway are different colours and different combinations for different orders and commands.
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