matchless(/peerless) throughout the world; un matched (/unparalleled/unrivalled) anywhere on earth; without a match (/peer/rival/parallel) in the world
? 我軍是一支～的軍隊。Our army is an army without a parallel in the world.
? 說得那岳飛人間少有，～。(《說岳全傳》九)Yue Fei was said to be rare without a peer in the world.
蓋世無雙ɡài shì wú shuānɡ
蓋世：超過世界上所有的人。比喻才能或技能達到了頂點，沒有人超得過。unparalleled anywhere in the world, without a peer, matchless throughout the world, have no equal on earth