adj.不能实现（达到）的

The dream of world peace remains an unrealistic and irrealizable aspiration for many.
世界和平的梦想对许多人来说仍然是一个不切实际且无法实现的渴望。
Building a time machine is considered an irrealizable concept by most scientists.
大多数科学家认为建造时光机是一个不可实现的概念。
The plan to colonize Mars within a decade is viewed as ambitious and irrealizable by some experts.
一些专家认为十年内殖民火星的计划既雄心勃勃又难以实现。
The idea of unlimited resources is an irrealizable fantasy in our finite world.
在我们这个有限的世界里，无限资源的想法是一个无法实现的幻想。
Achieving perfect equality in all aspects of life is often seen as an idealistic and irrealizable goal.
在生活的所有方面实现完全平等常常被视为一种理想主义且无法实现的目标。
The concept of perpetual motion, while intriguing, is physically irrealizable.
永动机的概念虽然吸引人，但在物理上是无法实现的。
The desire for a society without conflict may be an irrealizable utopia.
希望建立一个完全没有冲突的社会可能是一个无法实现的乌托邦梦想。
A world where every person has equal opportunities is a noble aim, but perhaps an irrealizable one.
一个每个人都有平等机会的世界是一个崇高的目标，但也许是一个无法实现的目标。
The promise of immortality through technology is seen by many as an irrealizable mirage.
通过科技实现永生被许多人视为一个无法实现的海市蜃楼。
The belief in a completely harmonious global community is an irrealizable vision for some realists.
对于一些现实主义者来说，相信能建立一个完全和谐的全球社区是一个无法实现的愿景。