subsist
/səbˈsɪst; səb`sɪst/ v[I, Ipr]
~ (on sth) (fml 文) (continue to) stay alive, esp with little food or money; exist （继续）存活, 活下去; （尤指藉微少的食物或金钱）维持生活; 生存
How do they manage to subsist (on such a low wage)? 他们（区区这点工资）怎样 口?
He subsisted mainly on vegetables and fruit. 他主要依靠蔬菜和水果维持生命.