the crème de la crème
noun [ S ] uk/ˌkrem də lɑː ˈkrem/ us/ˌkrem də lɑː ˈkrem/
精英；精华
the best people in a group or the best type of a particular thing
She was hoping to attract the crème de la crème of the art world to her exhibition. 她希望能吸引艺术界的精英来参观自己的展览。