copy ��ͨ�ôʣ�����㷺��ָ��ȷ�Ļ�ȷ�ĸ���Ʒ�� duplicate ��ָ��ȫһģһ�����ɴ���ԭ���ĸ���Ʒ�� model ��ָ��ij��ʽ�����졢��������С��ģ�ͣ�Ҳ��ָij��δ�Ƴ�֮ǰ������ģ�͡� reproduction ����ԭ�︴�ƵIJ�Ʒ�����ظ���Ʒ��ԭ�����ơ� facsimile ������copy������ͬ���������š�
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1. He duplicated a few copies of her letter and handed her the original. ����ӡ�˼��������ţ���ԭ�Ž�������
2. Select a constant to change its value, remove it or duplicate it. ѡ��һ�������Ա������ֵ��ɾ������������
3. They can understand and duplicate gestures and movements to show comprehension. �����ܹ����ײ����ظ����ơ���������ʾ���⡣
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n.
1. something additional of the same kind
2. a copy that corresponds to an original exactly v.
1. make or do or perform again
2. duplicate or match
3. make a duplicate or duplicates of
4. increase twofold adj.
1. identically copied from an original
2. being two identical