go one's separate ways

leave in a different direction from someone with whom one has just travelled or spent time

分道揚鑣

separate but equal

(US historical)racially segregated but ensuring equal opportunities to all races

(美 史)隔離而平等的

separate the men from the boys

separate the sheep from the goats

divide people or things into superior and inferior groups

（人，物）分出上等和下等

separate the wheat from the chaff