the cream of something idiom
C1 …的精华；…的精英
the best of a particular group of things or people
The cream of this year's graduates have gone abroad for jobs. 今年的优秀毕业生都出国谋职去了。
These artists are the best of our students - the cream of the crop. 这些艺术家是我们学生中的佼佼者——是他们中的精英。