1. His spirit was vitiated by pleasure seeking. ����־������Ժ����ֶ���ĥ������
2. In Easterlin's word: "As incomes rise, the aspiration level does too, the effect of this increase in aspirations is to vitiate the expected growth in Happiness due to higher income." ����˹���ֵĻ���˵�������������ˣ����ǵ�����ֵҲ��Ӧ����ˣ�����ֵ�����������������������Ԥ���������ӵ��Ҹ��С�
3. In Easterlin's word: "As incomes rise, the aspiration level does too, and the effect of this increase in aspirations is to vitiate the expected growth in happiness due to higher income." ����˹���ֵĻ���˵�������������ˣ����ǵ�����ֵҲ��Ӧ����ˣ�����ֵ�����������������������Ԥ���������ӵ��Ҹ��С���
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v.
1. corrupt morally or by intemperance or sensuality
2. make imperfect
3. take away the legal force of or render ineffective