比喻（计划、秘密等）向外泄露to leak out

• 知情者对内部机密要严格保守，不得外泄。

  People in the know must strictly protect and not leak internal secrets.

• 为防止举报内容的外泄，要对举报线索实施严密的管理制度。

  In order to prevent outside leaks of the tip-off, a strict management system must be implemented over clues to the tip-off.