Sure, a promise is a promise.

当然，我保证一定买它当礼物给你。

youdao

"A promise is a promise," he'd say.

“诺言就是诺言，”他会说道。

youdao

A promise is a promise.

承诺就是承诺。

youdao

That is a promise." The new governor of Virginia gave the Republican response to the State of the Union speech.

VOA: special.2010.01.30

All Milton has at the beginning of his poetic career is the promise of greatness, the anticipation of a luminous body of English poetry.

弥尔顿在诗歌生涯开始的时候只有,上帝传达给他必将伟大的希望，和必将成为英语诗人中最耀眼的人物的预期。

耶鲁公开课 - 弥尔顿课程节选

And we're going to begin with the story of Terah and his family. This is a story that's marked by the themes of divine command and divine promise.

我们将从他拉和他家族的故事开始,这段故事的主题是神的命定和应许。

耶鲁公开课 - 旧约导论课程节选

But I would propose an exemption to the a promise is a promise rule, and that's the immortal-genius-a-person-of-historical-importance exemption, very much akin to your put-it-away-for-a-generation.

NPR: Family Pauses over Woman's Posthumous Request

And a promise is a promise.

WHITEHOUSE: The White House

But no matter what the payment details are, every type of financial instrument is a promise, a promise of payment in the future, and so every single one of them presents an important question: How do I compare the value of money invested now, with money which I expect to receive in the future?

FORBES: Interest Rates For Dummies: Solving The Interest-Rate Puzzle