1. The rate of growth was unprecedented . ����ɳ�����ǰ��δ�еġ�
2. A historic and unprecedented event occurred. The question of whether or not we are alone in the universe has been answered. һ��ǰ��δ�е���ʷ�Ե��¼������ˡ��������Ƿ�ֻ����������������Ѿ��д��ˡ�
3. This unique model combines the qualities of a luxury saloon and a high-performance sports car in one, raising this superiority to a new, unprecedented level. ���ֶ��ص�ģʽ�����һ�������γ��������ܳ������ʣ�����������ߵ�һ���µģ�ǰ��δ�е�ˮƽ��