空前绝后

Explanation: Previously not been and will never be again. Exaggeration to describe unique. 　　Usage: Joint type; as attribute; describe the most unusual pomp 　　Source: Song Zhu Xiangxian "smell even recorded a male subject to the military": "ancient magnolias, to women as men, father's army, years and go, peer Mozhi that it is women who, poetry, beauty, books and passed on, to being to unprecedented. " 　　Examples: Back three generations to do the Sanchaoyuanlao, really can be described as "~" in the. (Qing Wu Jian "pain history" sixteenth back) 　　Results: Stirrup sub-nails palm; lesbians wear sandals 　　Postscript: Stirrup sub-nails palm; lesbians wear sandals 　　Riddle: Clogs; no beginning and no end Thesaurus:  unprecedented; have no precedent in history, never hear in past history, unheard-of, peerless Antonym Group:  continuously or incessantly, (as) thick as hail, Continuum continuous, Continuous Without a break, continue continuous