只需编辑这部分代码即可：

function editable_roles( $roles ){
    if( isset( $roles[\'administrator\'] ) && !current_user_can(\'administrator\') ){
      unset( $roles[\'administrator\']);
    }
    return $roles;
  }

function editable_roles( $roles ){
    //don\'t change anything if current user is admin 
    if (current_user_can(\'administrator\')) {
        return;
    }else{
        if( isset( $roles[\'administrator\'] ) && !current_user_can(\'administrator\') ){
           unset( $roles[\'administrator\']);
           //here you add  "unset( $roles[\'role_to_remove\']);" for each role you wish to remove
        }
    return $roles; 
  }