standard-bearer

1. N-COUNT If you describe someone as the standard-bearer of a group, you mean that they act as the leader or public representative of a group of people who have the same aims or interests. 領(lǐng)袖; 代表[usu with supp]

He was a standard-bearer for the causes of African-Americans. 他是一位美國(guó)黑人運(yùn)動(dòng)領(lǐng)袖。