unlearnable
adjective uk/ˌʌnˈlɜː.nə.bəl/ us/ˌʌnˈlɝː.nə.bəl/
无法学习的;学不会的
that cannot be learned
She has a very positive view of life and thinks that nothing is unlearnable.
After two years of trying, I had to conclude that for me, Japanese was actually an unlearnable language. 经过两年的努力，我不得不得出结论，对我来说，日语其实是一种无法学习的语言。
- More examples
- I recommend that you concentrate on mastering the applied side of the subject and ignore some of the more unlearnable theoretical constructs.
- If you take the attitude that something is unlearnable, then there is little chance that you will be able to grasp it.
- The author contends that the mathematics that we have been teaching in school for the last three decades has been flawed and unlearnable.