unattainable
🇺🇸
/ˌʌnəˈteɪnəbl/
🇬🇧
/ˌʌnəˈteɪnəbl/
impossible to get or reach
Her dream of becoming an astronaut seemed unattainable because of her poor eyesight.
由於視力不佳,她成為宇航員的夢想似乎無法實現。