an alternative that is not available 同义词：impossible action,
incapability of existing or occurring 同义词：impossibleness,
In contract law, impossibility is an excuse for the nonperformance of duties under a contract, based on a change in circumstances (or the discovery of preexisting circumstances), the nonoccurrence of which was an underlying assumption of the contract, that makes performance of the contract literally impossible. For such a defense to be raised, performance must not merely be difficult or unexpectedly costly for one party; there must be no way for it to actually be accomplished.
例句与用法
1.
Half an atom is an impossibility . 半个原子是不可能的事。
2.
He thinks it is impossibility . 他认为是不可能的事情。
3.
A single isolated force is therefore an impossibility . 所以单独的孤立的力是不存在的。
4.
We are forced to admit the impossibility of further enquiry . 我们被迫承认不可能进一步探索。
5.
In short, the impossibility is a logical impossibility . 简言之，这种不可能性是逻辑的不可能性。
6.
The bane of preemptive action is the impossibility of proving it was necessary . 先发制人论者的致命弱点在于无法证明其行动的必要性。
7.
Red ached dully as he realized the impossibility of ever seeing that man's face . 雷德心里真有些惆怅，那人脸上的神气他是永远也看不到的了。
8.
The adless publication is painted either as a disservice to the public, or as an economic impossibility . 无广告的出版物被说成是对公众不利的，或者说在经济上是不可能的。
9.
Galloping oscillations are usually violent and must be damped structurally, which is a near impossibility . 疾振通常是强烈的，必须从结构上进行阻尼，但实际上几乎不可能做到。
10.
Arguments based on the impossibility of perpetual motion can be used to support newton's third law of mechanics . 以承动机的不可能实现为基础的论据，也可用以支持牛顿第三运动定律。
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