active ָ�л������ǿ������������ֹ�෴�Ļ����״̬�� energetic �ᾫ�����桢��������ij��ҵ�� vigorous ָ�������ֻ����������������ҹ��о����ͻ���ʮ����ʢ�� brisk ָ�������ݡ����������������õش���ij������� lively ����֧�ִ��죬���ǣ���������
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1. The vigorous, the healthy, and the happy survive and multiply . ǿ׳�ġ���ȫ�ĺ����˵��ܻ����棬���ܹ���ֳ��
2. The efficacy of an alarm clock is explained as a very vigorous sensory input that triggers a large, synchronous assembly. ��������֮������Ч�����Խ��ͳ�һ���dz�ǿ��ĸо����룬����һ�����ͬ����ϡ�
3. Changing the student's attitude to make him be vigorous in study is the problem which the teacher has to face and try to manage. �γɺı�ѧ����̬�ȣ�ʹѧ������ѧ�γֻ̳���̬�ȣ��ǽ�ʦ�ڽ�ѧ�в��ò���Բ���ͼ��������⡣
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adj.
1. characterized by forceful and energetic action or activity
2. strong and active physically or mentally