1. He is conscientious about his work. ���Թ��������渺��ġ�
2. Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. ��������û�бȴ������֪�����������Σ�յ��ˡ�
3. Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. ----Martin Luther King Jr. ��������Ҳû�бȴ������֪�����������Σ�յ��ˡ�----С������·�¡���
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adj.
1. characterized by extreme care and great effort
2. guided by or in accordance with conscience or sense of right and wrong