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？ 英语
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【答案】 没有希望,受到严重打击,低落等
I think Sony has had a history of over-promising and under-delivering
我认为索尼曾有过一段没有希望的日子（严重的低谷期）