用英文描述广告的作用

这篇文章讲的是广告的三大作用：

Advertising is paid, nonpersonal communication that is designed to communicate in a creative manner, through the use of mass or information-directed media, the nature of products, services, and ideas. It is a form of persuasive communication that offers information about products, ideas, and services that serves the objectives determined by the advertiser. Advertising may influence consumers in many different ways, but the primary goal of advertising is to increase the probability that consumers exposed to an advertisement will behave or believe as the advertiser wishes. Thus, the ultimate objective of advertising is to sell things persuasively and creatively. Advertising is used by commercial firms trying to sell products and services; by politicians and political interest groups to sell ideas or persuade voters; by not-for-profit organizations to raise funds, solicit volunteers, or influence the actions of viewers; and by governments seeking to encourage