nuts and bolts

• Expressão informal que designa os detalhes básicos, práticos ou fundamentais de algo, especialmente o funcionamento de um sistema, processo ou mecanismo.

An informal expression referring to the basic, practical, or fundamental details of something, especially how a system, process, or machine works.

1. Basic practical detailsB2informal

   The fundamental, practical, or essential aspects of a subject or activity.

   Detalhes práticos básicos

   • He explained the nuts and bolts of how the engine works.
   • Before you start, you need to understand the nuts and bolts of the software.
   • The course covers the nuts and bolts of business management.