1. Why should it depend for recovery on external demand? �侭�ø���Ϊ��Ҫ�������ⲿ�����أ�
2. Restart your computer from the installation CD in Recovery Console mode. �����������ԣ��Ӱ�װ�����ϻָ�����̨ģʽ��
3. A routine that examines the results of an input / output activity and determines if any error recovery is required. �����������Ľ�����м�飬��ȷ���Ƿ���Ҫ���г����ָ���һ�ֳ���
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n.
1. return to an original state
2. gradual healing (through rest) after sickness or injury
3. the act of regaining or saving something lost (or in danger of becoming lost)