1. This leads to an insufficient supply of nutrients to the brain causing brain degeneration. �����ɹ�Ӧ��ͷ�Ե�Ӫ���ز��������ͷ���˻���
2. What speeds up the degeneration? Sun exposure. "The absolute worst thing you can do is sit in the sun, " he says. ʲô�������������ϻ���̫������ɹ�����������ľ����������������ȥ����̫�����¡����ơ�
3. The degeneration of natural grassland has caused a series of problems of ecological economy in North China pasture. �ҹ�������������Ȼ�ݵط��������ص��˻���������һϵ����̬�������⡣
ӢӢ����
n.
1. the process of declining from a higher to a lower level of effective power or vitality or essential
2. the state of being degenerate in mental or moral qualities
3. passing from a more complex to a simpler biological form
�ɿ�Ӣ�� - 划词释义
