1. Without the use of colour for closed-circuit work there would not be such excellent demonstrations of operations and classroom instruction in medical schools and monitoring of certain industrial processes in factories as we have today. 
   闭路电视没有颜色的使用，我们现在就不会有精彩的操作示范和医学院里课堂训练以及在工厂里某些工业生产过程的监控。
2. Having colour; having the specified colour 
   有色的；有某种颜色的
3. Break down a colour 
   冲淡颜色
4. colour television test card 
   彩色电视测试图
5. The rose is red colour and yellow colour. 
   玫瑰是红色和黄色的。

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