Whatever family taboos it may violate, the topic of political dynasty is hard to avoid as Bush perches on a marble bench at his presidential library here to preview an exhibit that opens next week.

• 不管冒犯了什么样的家族禁忌，当老布什坐在这里总统图书馆内的大理石凳上预先参观一个下周即将展出的展览时，有关政治王朝的话题是很难避开的。