1.本质;实质;基本事实 If people get down to the nitty-gritty of a matter, situation, or activity, they discuss the most important, basic parts of it or facts about it.
英英释义
1.the choicest or most essential or most vital part of some idea or experience
e.g. the gist of the prosecutor's argument the heart and soul of the Republican Party the nub of the story
