偶然 | ǒu rán | incidentally / occasional / occasionally / by chance / randomly | |
附带 | fù dài | supplementary / incidentally / in parentheses / by chance / in passing / additionally / secondary / subsidiary / to attach | |
顺带 | shùn dài | (do sth) in passing / incidentally (while doing sth else) | |
偶见 | ǒu jiàn | to happen upon / to see incidentally / occasional / accidental |