turn in your grave idiom UK (US turn/roll over in your grave)
在九泉之下也不得安宁；气得（或由于不安）在坟墓中辗转反侧；将死人气活
If you say that a dead person would turn in their grave, you mean that they would be very angry or upset about something.
She'd turn in her grave if she knew what he was spending his inheritance on. 如果得知他是如何挥霍她留下的遗产的，她在九泉之下也不得安宁。