1·This paradoxical and impenetrable phenomenon has not been paid attention to as yet by the domestic and overseas communication circle.
这一令人费解的矛盾现象，至今尚未引起海内外传播学界的关注。
2·I find his style somewhat impenetrable.
我发现他的行为方式令人颇为费解。
1·More impenetrable are things that you cannot explain because you don't know what the other party needs to know.
更不可理喻的是，你由于不知道对方所需了解内容而无法解释的一些东西。