✔ 最佳答案
中流砥柱 中堅份子
mainstay
e.g. Liza Wang is a TVB mainstay.
hard core, backbone
e.g. He a member of the hard core of the student union.
2006-11-09 15:33:03 補充:
打漏字 He is a member of the hard cord of the student union. hard core 是指一群中堅份子, 同team一樣用單數眾數也可, 但不可以用 a hard core 來指一個具有中堅身份的人