1. Eternal vigilance is the price of liberty. ���ɵĴ�����������ľ��䡣
2. The watchman who caught the thief was praised for his vigilance. ץס�����Ŀ����ˣ���ֵ�������������ľ����ԡ�
3. Therefore, we must keep up our vigilance and never harbour illusions about the "peace strategy" of US imperialism. ��ˣ����DZ��뱣�־��裬���������۹�����ġ���ƽս�ԡ����κλ��롣
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n.
1. the process of paying close and continuous attention
2. vigilant attentiveness