[] () a system of advertising on the Internet in which a business pays for an advertisement and a link to a website to be displayed when a user searches for particular words关键字广告（互联网的刊登广告方式。企业付广告费后，互联网用户搜索某些词便会显示接到某网站的链接）▸ˌkeyword ˈad ( ˌkeyword adˈvertisement, less frequent )
noun
[] ◆You'll pay around $50 CPM (cost per thousand impressions) for your keyword ads on most search engines.对于大多数搜索引擎的关键字广告，每千次显示费用大约要付 50 元。