本集酷学习高二英语围绕第二学期模块二（The power of images）中的第三单元（色彩Colours）对色彩进行探讨。第一讲主要介绍色彩在生活中的应用，包括消防，交通，婚庆民俗，电力，航空等领域。同时还介绍了红绿灯的由来。西方救护车车身标识说明。中国的五行和对应的颜色。颜色小于三原则。四色性格测试介绍。相关词语辨析和讲解（英美文化中同词不同写法）。 This episode of Kuxuexi is about Unit 3 (Colours) of the 2nd module (The power of images) in the second semester of higher-school English. The main part of this episode is about the how to use them in life. It is also introduced the history of traffic lights and the bonnet “ambulance”. Some phrase analyses and main vocabularies explanations are included.