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.
例句
The city's newspapers still attempt to get down to the nitty gritty of investigative journalism.该市报纸仍在试图厘清调查性新闻的实质。...the nitty gritty of everyday politics.日常政治生活的本质
英汉词典释义
n.
事实真相,本质
Let's get down to the nitty-gritty in this discussion.让我们研究一下讨论中的实质问题吧。
英英词典释义
Noun
1. the choicest or most essential or most vital part of some idea or experience;
"the gist of the prosecutor's argument""the heart and soul of the Republican Party""the nub of the story"