having enough experience to be able to do sth easily :
I've made this trip so often, I could do it with my eyes shut.
having enough experience to be able to do sth easily :
I've made this trip so often, I could do it with my eyes shut.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005