没有从下面句子里面体会吧有效的，生效的，实际的Advertising is often the most effective method of promotion.做广告往往是最有效的推销方法。Their efforts to improve the production have been very effective.他们提高生产力的措施卓有成效。When does the new system become effective?新制度何时生效？Her brother is the king, but she is the effective ruler.她的兄弟是国王， 但她才...
