the nuts and bolts (of something)

成語所屬單字bolt

the nuts and bolts (of something) — 慣用語

1. The basic practical details of a subject or activity.

1.慣用語
釋義

基本細節

The basic practical details of a subject or activity.

例句

The course teaches the nuts and bolts of computer programming.

Sara learned the nuts and bolts of running a small business.