The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill.

为世界粮食短缺问题找到长期技术解决方案的希望似乎很难实现。

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Scientists and engineers have long believed in the promise of batteries to change the world.

长期以来，科学家和工程师们都相信电池能够改变世界。

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If you start looking for the good in the world instead of focusing on the bad, I promise you will find it.

如果你开始寻找世界上的善而不是只关注恶，我敢保证，你会找到那些美好的事物的。

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He spoke about the importance and the promise of America's new position in the world.

VOA: special.2010.07.29

The promise of the 1999 World Cup is that it will be graced by three of the very best players in the history of cricket.

ECONOMIST: Three of the best

If this is the case, the third hundred days might look much less like the promise of the 2008 election and more like the political world that Obama wanted to transform.

CNN: Commentary: Why Obama's plans are stalled

Who among the downtrodden and the dispossessed can fail to be stirred by the promise of a world in which all men are equal, and each has what he needs?

FORBES: Magazine Article