unfulfilled

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Mr Trocino believes that it suits Mr Bossi and his followers to have an eternally unfulfilled demand.
特罗奇诺认为有一个永远达不到的要求对博西和他的追随者来说很适合。
There are other forces that can drive your life but all lead to the same dead end: unused potential, unnecessary stress, and an unfulfilled life.
其他还有许多动力会驾驭你的人生，但这些全部导向一个死胡同————-埋没了的潜能，不必要的压力和失落的人生。
Sixth, we need to exploit the vast unfulfilled opportunities for energy efficiency in electric motors, light bulbs, consumer appliances and home heating and cooling.
重点之六是我们需要在电动机、灯泡、消费电器、家庭取暖和制冷方面发掘众多尚未实现的提高能源效率的机会。

He becomes distracted by an inward fire that draws him into the woods where he wanders and sings, full of unfulfilled desire.
他被内心的热灼分了心,被吸引到林深处，在哪里他,游荡歌唱，怀着种种无法实现的愿望。
耶鲁公开课 - 现代诗歌课程节选

Candidates promising to bring back those millions of jobs will leave the hopes they create unfulfilled.
FORBES: How to Get Americans Back to Work
Women frequently put their needs behind those of others and ultimately become frustrated, unfulfilled, or angry.
FORBES: The Mistakes You Don't Know You're Making
Yet, for many and for much of our Nation's history, that dream has gone unfulfilled.
WHITEHOUSE: The White House

If a wish, hope, promise, etc. is unfulfilled, it has not happened or been achieved.

If you use unfulfilled to describe something such as a promise, ambition, or need, you mean that what was promised, hoped for, or needed has not happened.
If you describe someone as unfulfilled, you mean that they feel dissatisfied with life or with what they have done.