Definition
- C2
to make every possible effort to find something or to achieve a goal
（尤指尋找東西時）竭盡全力，不遺餘力
To ensure the project's success, they left no stone unturned in their search for the best solution.
為了確保專案的成功，他們竭盡全力尋找最佳解決方案。
The police left no stone unturned, pursuing every lead in their investigation of the case.
警方不遺餘力，追查每一條線索來調查這個案件。
She left no stone unturned in her fundraising efforts for the charity, going door to door.
她為慈善機構的募款活動竭盡全力，挨家挨戶地拜訪。