適者生存

survival of the fittest

surname Shi

to fit / suitable / proper / just (now) / comfortable / well / to go / to follow or pursue

(after a verb or adjective) one who (is) ... / (after a noun) person involved in ... / -er / -ist / (used after a number or 後|后[hou4] or 前[qian2] to refer to sth mentioned previously) / (used after a term, to mark a pause before defining the term) / (old) (used at the end of a command) / (old) this

to be born / to give birth / life / to grow / raw / uncooked / student

to exist / to survive

to exist / to deposit / to store / to keep / to survive