[] (used especially in the continuous tenses 尤用于进行时) to be less successful than other companies, people, etc.落后；失利；失败◆Their sales are trailing behind other superstores.他们的销售量落后于其他超市。◆Our 24% market share is trailing our competitor's 41%.我们 24% 的市场份额落后于竞争对手的 41% 的市场份额。◆The UK trails badly when it comes to research and development spending on IT.英国在信息技术方面的研发经费大大滞后。 [] to advertise a plan, product, film/movie, etc. in advance提前宣传（计划、产品、电影等）◆the company's heavily/widely trailed plans公司大规模的提前宣传计划◆The revenues were slightly better than trailed.收入比预先宣传的稍好些。 [] to follow behind sb/sth跟随；追踪◆New business jet orders typically trail a recovery by nine to twelve months.商务飞机新订单往往比经济复苏晚 9 至 12 个月到来。●ˌtrail ˈoff () to gradually become less逐渐减少；减弱◆Income from advertising increased in the first half of the year, but then trailed off.今年上半年广告收入有所增长，但随后逐渐减少。