据说:“当时的印度语言就是以繁复为美。就如当时中国的语言以简洁为美一样,都
是一种语言习惯。” 。。。 http://www.zhihu.com/question/27976992
.... "Since it was originally an orally transmitted tradition, Buddhism
likes repetition, especially three-fold repetition" .....
http://www.wildmind.org/mantras/figures/refuges-precepts
..... "The threefold repetition marks off the recitation from ordinary
uses of speech, and ensures that the mind dwells on the meaning of each
affirmation at least once." .... An Introduction to Buddhism: Teachings,
History and Practices by Peter Harvey