over-promising and under-delivering.啥意思比如这句：I think Sony has had a history of over-promising and under-delivering.如果是一种营销策略呢？不是变成贬义的了吗？overpromising and underdelivering 到底是什么呢？

promising under-delivering,over-promising,sole medium的意思 over-promising and under-delivering.啥意思比如这句：I think Sony has had a history of over-promising and under-delivering.如果是一种营销策略呢？不是变成贬义的了吗？overpromising and underdelivering 到底是什么呢？ 三、翻译短文2) The development and commercialization of lithium ion batteries is rooted in material discovery.Promising new materials with high energy density are required forachieving the goal toward alternative forms of transportation.Over th over and over造句 over and over over and over over and over Over And Over 歌词 请问 :over and over Over And Over (And Over Again) 歌词 U.S.and Egypt square off over protesters' demands,求标题翻译, promising 有前途! promising 有前途! promising girlfriend 用over and over造句 over and over等同于over and over again吗?over and over again中的again能省吗? what if over and over and over again 什么意思