President Obama made a promise to the newly graduated Navy and Marine officers.

VOA: standard.2009.05.22

But it's still a promise, and it's a promise of the powers of imagination and of poetry, and of poetry made out of play, of a child's play.

但始终还是一个希望，一个想象力和诗歌伟大力量的希望，这些诗是从玩中来的，从孩子们的玩耍中。

耶鲁公开课 - 现代诗歌课程节选

You may give a cold shoulder to a friend who has not kept a promise he made to you.

VOA: special.2009.12.13

President Obama made a campaign promise to begin efforts for immigration reform in his first year in office.

VOA: special.2009.04.18

But critics pointed out that world leaders made a similar promise more than ten years ago.

VOA: special.2009.11.23

And if you don't kill us I'll do my best to protect you.'" Swan has kept the promise, his eyes opened to environmental problems made worse by a warming climate.

VOA: standard.2009.12.10