| 释义 | impenetrability noun[ U ]
 uk /ɪmˌpen.ə.trəˈbɪl.ə.ti/ us /ɪmˌpen.ə.trəˈbɪl.ə.t̬i/
 the quality of being impossible to see through or go through:
 impenetrability ofIt's hard to get access to most of the animals because of the impenetrability of the habitat.
 Until 1953, Everest's summit had an aura of impenetrability.
 the quality of being impossible to understand:
 impenetrability ofThe impenetrability of the plot, and the large cast of characters can be frustrating.
 The impenetrability of much research is a cause for some concern.
 One exception to the impenetrability of the drug companies is the access that a few politicians have enjoyed.
 A key channel of investor communications is still the annual report, famous for its impenetrability.
 SMART Vocabulary: related words and phrases
 Unavailable and inaccessible
 booked up
 busy
 busy signal
 discontinued
 engaged
 gone
 inaccessibility
 irrecoverably
 lost
 non-availability
 out-of-pocket
 oversubscribed
 pocket
 season
 tie
 unaccounted for
 unavailability
 unavailable
 unopenable
 unreachable
 
 You can also find related words, phrases, and synonyms in the topics: Difficult to understand
 
 Related word
 impenetrable
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