unaided
adjective, adverb uk/ˌʌnˈeɪ.dɪd/ us/ˌʌnˈeɪ.dɪd/
无外援的；独立的
without any help from anyone else; independently
Since his accident, he hasn't been able to walk unaided. 自从出了车祸后，他一直不能独自行走。
The two explorers attempted an unaided walk across the South Pole. 两位探险者试图独自徒步穿越南极点。