the ins and outs of something------詳細情況(非正式)
英文釋義
(INFORMAL) Expression referring to the details of something such as a process; the complicated procedures by which something is operated.
例句
It took me a long time to learn the ins and outs of my new job as a manager.
我花了很長時間才瞭解了我的新的經理職務的詳細情況。