absolute impossibility meaning in English

绝对不可能

Recourse to the principles as a substitute for the domestic law otherwise applicable is of course to be seen as a last resort ; on the other hand it may be justified not only in the event of the absolute impossibility of establishing the relevant rule of the applicable law , but also whenever the research involved would entail disproportionate efforts and or costs
以通则替代国内法自然只能作为最后一种选择。但另一方面，在根本不可能确定适用法的相关规则的情况下，或是在进行相关的研究必须付出不相称的努力和或代价的情况下，这种做法将会是合理的。