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.
Π‘Π΅ΡΠΈΠ°Π»Ρ ΠΈ ΡΠΈΠ»ΡΠΌΡ Π½Π° Π°Π½Π³Π»ΠΈΠΉΡΠΊΠΎΠΌ Ρ ΡΡΠ±ΡΠΈΡΡΠ°ΠΌΠΈ. +1 ΠΠ΅ΡΡΡ Π² ΠΏΠΎΠ΄Π°ΡΠΎΠΊ π
Example: Law school can teach you theory, but it can't teach you the nuts and bolts of the profession.