put someone through the wringer idiom informal
（提出刁钻问题）使（某人）饱受折磨，使经受考验
to ask someone difficult or unpleasant questions, often to find out if they are doing their job in a satisfactory way
Outside investigators will put the company's accounting practices through the wringer. 外来的调查人员将会对这家公司的会计工作严加审查。