对,'ambiguity' can be negative, 我认为你说的
She was the centre of the group 就ambiguous. 这里的group是具体的entity (group of people),所以she was the centre of the group 会被误解为一组人她站在中间。
She was the centre of the group 就ambiguous. 这里的group是具体的entity (group of people),所以she was the centre of the group 会被误解为一组人她站在中间。