下不为例，汉语成语，指某件事做了将来，下次不可以再如此做。有提醒、警告、只能通融这一次的意思。可以翻译为not serve as a precedent1; not to be taken as a precedent; not to be repeated等。
例句：
我保证下不为例。
I promise not to do it again.
只此一遭，下不为例。
only this time and no more.
下不为例，汉语成语，指某件事做了将来，下次不可以再如此做。有提醒、警告、只能通融这一次的意思。可以翻译为not serve as a precedent1; not to be taken as a precedent; not to be repeated等。
例句：
我保证下不为例。
I promise not to do it again.
只此一遭，下不为例。
only this time and no more.