绝无仅有

Explanation: Extremely rare. Describe a very rare 　　Usage: Joint type; as predicate, object, attribute; describe the rare things 　　Source: Su Song, "written on the emperor": "turn over a generous, good advice, the Yao, Shun and Yu, soup of the force and to exercise, since the Qin and Han and only the no." 　　Examples: Following the new generation after their father or mother to be a writer, you can say ~. (Mu "generations") Thesaurus:  lit.: dragon flies, phoenix dances, pass through the hall into the inner chamber, , reach a higher level in one's studies or fecome more proficient in one's profession, When the line of outstanding, be unprecedented from time immemorial, acclaim as the acme of perfection, from time immemorial unsurpassed, creation of the world, unique among one's contemporaries outstanding, Jifengzaoji, be powerful and unstrained like a heavenly steed soaring across the skies, the last word, sigh to the end Antonym Group:  Again and again, time and again, for the thousand and first time, in the blood, Two San Francisco, Second San Francisco, Generations devolution, all too often, Repeatedly in, often and often, form a connecting link between the preceding and the following, inherit the past and usher in the future, inherit the past and forge ahead into the future, one after the other, Fenlaidazhi, Following the ancient open today, continue with the past and open up the future, Close succession And to, Starting, turnstile