"one of the greatest mysteries翻译"...one of the greatest mysteries翻译

　"the greatest of these翻译"...the greatest of these翻译

　"greatest mysteries翻译"...greatest mysteries翻译

　"thegreatestinvention翻译"...thegreatestinvention翻译

　"the greatest翻译"...the greatest翻译

　"the greatest use of life翻译"...the greatest use of life翻译

　"oneofthemainreasons翻译"...oneofthemainreasons翻译

　"the great society 翻译"...the great society 翻译

　"one great thing about them翻译"...one great thing about them翻译

　"one of its greatest mysteries翻译"...one of its greatest mysteries翻译