concrete ָͨ���й��ܿ����������������ľ��嶫�����䷴�����abstract�� specific ����ָ�����ϸ�ڣ�����general(һ��)��vague(ģ��)��Եľ��塣
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1. The workmen are still busy concreting the road. ��������æ���û�������·��
2. Attempts through to the concrete case analysis. ��ͼͨ���Ծ��尸���ķ�����
3. On the other hand, culture is concrete and specific. ��һ���棬�Ļ����Ǿ���ĺ���ȷ�ġ�
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n.
1. a strong hard building material composed of sand and gravel and cement and water
2. cover with cement
3. form into a solid mass; coalesce adj.
1. capable of being perceived by the senses; not abstract or imaginary
2. formed by the coalescence of particles