Nuts and bolts什麼意思

"Nuts and bolts" is an English idiom that means the basic, essential, or fundamental parts or elements of something. It is often used to refer to the practical, tangible aspects of a situation or problem, rather than the abstract or theoretical aspects. The phrase suggests that one is focusing on the details or the "nuts and bolts" of a situation.

The origin of this idiom is literal, referring to the hardware components used to fasten objects together, such as nuts and bolts. Over time, the phrase has been used metaphorically to describe the fundamental components of any complex system or idea.