very rarely
очень редко (ochen redka)
"I only see him once in a blue moon."
"Я вижу его очень редко." (ya vizhu yego ochen redka)
to be exactly right about something
to show disapproval by leaving or not participating
to reduce how much you use or pressure someone
to be in control of a situation
to go out and enjoy oneself in a lively and extravagant way
to use one's authority or influence in an aggressive way