Deutsch-Englisch Übersetzung für undurchlässig

impenetrableThe fortress is impenetrable, so it cannot be taken.Business jargon makes this document impenetrable, I cant understand it.When night falls, she cloaks the world in impenetrable darkness.
impervious
us
The man was completely impervious to the deception we were tryingAlthough patchworked and sagging, the roof proved impervious to the weatherThe old car seemed to be impervious to the wear and tear of age

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