Definition
This idiom refers to the state of being imprisoned indefinitely, with release contingent upon an official determination that it is safe to do so.
依圣裁决定监禁
He was held in prison at His Majesty's pleasure, indefinitely, pending further notice.
他被无限期地关押在监狱中，等待进一步的通知。
The offender was imprisoned at Her Majesty's pleasure, meaning he would be detained until the authorities deemed it safe to release him.
该罪犯被无限期监禁，意味着他将被拘留，直到当局认为释放他是安全的。
She was sentenced to be detained at His Majesty's pleasure for several serious offenses, with no specified release date.
她因多项严重罪行被判无限期拘留，没有具体的释放日期。