当我们打开电视机,有时会欣喜地看到“节约用水”、“安全用电”的公益广告。从某种意义上讲,公益广告是社会良知与文明的反映,它在提倡社会公德、维护社会公益、净化社会风气等方面发挥着独特的作用。由于公益广告的主题与大众切身利益息息相关,使人易于理解,乐于接受;同时, When we turn on the TV, we are sometimes delighted to see PSAs for “water saving” and “safety for electricity.” In a sense, public service advertising is a reflection of social conscience and civilization. It plays a unique role in advocating social ethics, safeguarding public welfare, and purifying the social atmosphere. As the theme of PSAs is closely related to the vital interests of the general public, it is easy to understand and willing to accept; at the same time,