nitty-gritty
n. 事实真相；本质
近义词：core，mechanics，essentials，brasstacks，fundamentals，basics，cruxofthematter，nutsandbolts，pith，marrow，center，nub，kernel，inwardness，sum，centre，heartandsoul，substance，heart，gist，essence，meat，
英英释义
Noun
- 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"
例句
- Let's get down to (discussing) the nitty-gritty.咱们著手探讨实际情况吧。