nitty-gritty /ˈnɪtiˌgrɪti/ noun Learner's definition of NITTY-GRITTY
the nitty-gritty
informal
: the most important and basic facts or details about something本质；最基本最关键的细节 -
He deals with the nitty-gritty of running the department.他负责部门管理的重要细节工作。
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We finally got down to the nitty-gritty of the problem.我们终于谈到问题的关键了。
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Let's get down to the nitty-gritty and find out what happened.我们言归正传，看看到底是怎么回事。