1. If it is unstable, improve it. ��ʹ���Dz��ȶ��ģ���������
2. But, this kind of low birth level very is unstable, also inevitable has brought some social questions. ���ǣ����ֵ�����ˮƽ���ܲ��ȶ���Ҳ���ɱ���Ĵ�����һЩ������⡣
3. Results show, under a given coupling condition, the system will be unstable when the power overtakes its threshold. �����������һ������������£�����ij��������ֵ������ϵͳ���ȶ���
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adj.
1. lacking stability or fixity or firmness
2. highly or violently reactive
3. affording no ease or reassurance
4. suffering from severe mental illness
5. disposed to psychological variability
6. subject to change; variable