Daily Chinese Idiom Guessing Game
Unique; extremely rare; having no equal or parallel.
只有一个，再没有别的。形容非常少有。
宋·苏轼《上皇帝书》改过不吝，从善如流，此尧舜禹汤之所勉强而力行，秦汉以来之所绝无而仅有。”
Her collection of ancient manuscripts is absolutely unique and unparalleled.