subsist
verb- [intransitive] subsist (on something)
to manage to stay alive, especially with limited food or money (尤指靠有限的食物或钱)维持生活,度日 - [intransitive] (
law )法律 to exist; to apply and be relevant 存在;有效
Word Originmid 16th cent. (in the sense ‘continue to exist’): from Latin subsistere ‘stand firm’, from sub- ‘from below’ + sistere ‘set, stand’.