come (/fall/run)across;meet accidentally; meet by chance; meet unexpectedly; run into sb
❍ ～， 与子偕臧。 (《诗经·国风·郑·野有蔓草》) Chance gave us a meeting rare|And we both were happy there.
❍ 我同他在街上～。I met him unexpectedly in the street.
邂逅相遇xiè hòu xiānɡ yù
邂逅：没约会而遇到。指双方事先未经约定而偶然碰到。meet by change, meet unexpectedly, come across