back ͨ��ָ���۵㡢�ж�����ҵ�ȵ�ǿ����֧�֡� uphold �ȿ�ָ����Ŭ�������������ߵ�֧�֣�Ҳ��ָ��ij�����ж�������������ϵ�֧�֡� support ����㷺����ָ�ڵ����ϻ�������֧��ij�ˣ�Ҳ��ָ��ij����ҵ��֧�֡� sustain ����ָ�������ϵ�֧�֡� advocate ��ָͨ��д���»���˵����֧�ֻ�ӵ����������ʾ�ᳫij�»�Ϊij�±绤��
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1. How long will you sustain the rudeness of your boss? ������˾�Ĵֱ������㻹�����ܶ��?
2. But for how long can China sustain such growth? ���й��ܹ����ֶ�������ľ���������
3. All you have is enough water and dry biscuits to sustain one person for about ten days. �����еĶ�������������ˮ���ܹ���һ����ά��ʮ�����ҵı��ɡ�
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v.
1. lengthen or extend in duration or space
2. undergo (as of injuries and illnesses)
3. provide with nourishment
4. supply with necessities and support
5. be the physical support of; carry the weight of
6. admit as valid
7. establish or strengthen as with new evidence or facts