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1·Promise are, like piecrust, made to be broken.

允诺常常是靠不住的。《新英汉大辞典》

2·Promises are like piecrust, made to be broken.

诺言好似馅饼皮，做来便是为咬碎。

3·Promises are, like piecrust, made to be broken.

允诺常常是靠不住的。