to meet someone unexpectedly
encontrarse con alguien inesperadamente (encontrarse con alguien inesperadamente)
"I bumped into an old friend at the mall."
"Me encontré con un viejo amigo en el centro comercial." (Me **encontré** con un viejo amigo en el centro comercial.)
to search through different places to find something
when rain or snow falls heavily
to make policies consistent with those of another country or...
to experience problems or difficulties
to examine things carefully to choose the best
to hide a mistake or wrongdoing