明ㄇㄧㄥˊ察ㄔㄚˊ暗ㄢˋ訪ㄈㄤˇmíngchá‑ànfǎng

简明察暗访

  1. 公開調查，暗中尋訪。例 「經過明察暗訪之後，案情終於水落石出」。

英open enquiries and secret search (idiom)​; to investigate openly and in secret, taking information from all sides