Nuts and bolts
Meaning: details, the basic parts of a job or an activity
Example: Law school can teach you theory, but it can't teach you the nuts and bolts of the profession.
Выучи грамотный разговорный английский до уверенного владения всего за 9 месяцев по системе естественного усвоения иностранных языков. Жми!
Example: Law school can teach you theory, but it can't teach you the nuts and bolts of the profession.