matchless; be unique(/have no equal) in the world;unmatched;unrivalled ❍ 他说善于玩把戏，空前绝后，～，人们从来就没有看见过；一见之后，便即解烦释闷，天下太平。(鲁迅《故事新编》82) He says he can do a wonderful trick the like of which has never been seen,unique in the world and absolutely new. The sight will end all care and bring peace to the world.
举世无双jǔ shì wú shuānɡ
全世界没有第二个。比喻十分稀有、珍贵。matchless, unrivalled, without a rival