the fact or state of not being able to work as intended, or of not being able to succeed

the unviability of the plan 计划的不可行性

All the talk was of the financial unviability of the project. 所有人都在谈论该项目在财务上的不可行性。

the fact or state of not being able to continue to exist as, or develop into, a living being

the unviability of the pregnancy 怀孕无法继续下去的情况

Egg unviability and disappearance were observed in this study. 这个研究发现卵子无法存活，并且消失不见。