im·prac·ti·ca·bil·i·ty
noun/ɪmˌpræktɪkəˈbɪləti/
/ɪmˌpræktɪkəˈbɪləti/
[uncountable]- the fact of being impossible or very difficult to do or of not being practical in a particular situation
在特定情况下不可能或很难做到或不实际