happen on [sth/sb], happen upon [sth/sb]vtr phrasal insepphrasal verb, transitive, inseparable: Verb with adverb(s) or preposition(s), having special meaning, not divisible--for example,"go with" [=combine nicely]: "Those red shoes don't go with my dress." NOT [S]"Those red shoes don't go my dress with."[/S]
dated, literary (find, encounter)
偶然发现 ǒu rán fā xiàn
偶然遇到 ǒu rán yù dào
I happened on an interesting article about Cuba in the newspaper.