A standard mortgage-loan document reads, 'I promise to pay' the amount borrowed plus interest, and some people say that promise should remain good even if it is no longer convenient.

标准化的抵押贷款文件都有借款人“承诺”偿还所借款项及其利息的条款，一些人也认为，这样的承诺即使兑现起来不再容易，也还是不应该违背。

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Had a promise of love, is better than no promise of love beautiful, once going to punish commitment has become too far away.

有过承诺的爱，总比未有过承诺的爱凄美，一旦要去追讨承诺已变得太遥远。

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But if I promise to give my daughter a handful of diamonds because I love her, there is no "consideration" for my promise; she contributes nothing in return.

但如果我因为深爱我的女儿而答应送给她几粒钻石，那么我的承诺里就没有“约因”，她无须回报什么。

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As for a big confectioner like Cadbury, no doubt the promise of a non-stick ingredient would give its gum products an edge over its rivals.

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It's a way to potentially cut the waste out of our health system, and also reminds doctors of a promise they make to each and every patient: a promise to do no harm.

CNN: Doctors and patients should talk more, test less

There was no promise of a Clean Air Act or tough new powers for China's environmental authorities, just the promise to do better.

BBC: What does the future hold for China?