This is AI’s most transformative promise: longer,healthier lives unbounded by the scarcity and frailty that have limited humanity since its beginnings. ■
frailty /ˈfreɪlti/ 虚弱，脆弱，弱点。例句：Despite her physical frailty, she neverlet it hold her back from pursuing her dreams.（尽管身体虚弱，她从不让这一点阻碍她追求梦想。）