that cannot be entered, passed through or seen through 不可进入的；穿不过的；无法透视的 an impenetrable jungle 无法穿越的丛林 impenetrable darkness 漆黑
Oxford Collocations Dictionaryverbs- be
- seem
- become
- …
- almost
- nearly
- virtually
- …
- to
impossible to understand 不可理解的；高深莫测的 an impenetrable mystery 不解之谜 Her expression was impenetrable. 她的表情难以理解。 - impenetrable to somebody
Their jargon is impenetrable to an outsider. 他们的行话外人听不懂。
Extra ExamplesI find his style somewhat impenetrable. 我发现他的行为方式令人颇为费解。 The language of this document would be impenetrable to anyone except a specialist. 这份文件的语言除了专家以外任何人都难以理解。 The camerawork is beautiful but the plot is impenetrable. 这部电影很美，但情节难以理解。
Oxford Collocations Dictionaryverbs- be
- seem
- become
- …
- almost
- nearly
- virtually
- …
- to
Word Originlate Middle English: via French from Latin impenetrabilis, from in- ‘not’ + penetrabilis ‘able to be pierced’, from the verb penetrare; related to penitus ‘inner’.