N-SING 有特别影响力的小群体；（排外的）小圈子 If you refer to a group of people as a charmed circle, you mean that they seem to have special power or influence, and do not allow anyone else to join their group. 有特别影响力的小群体；（排外的）小圈子 [literary]
...the immense role played by this very small charmed circle of critics. [+ of]