1. That is an enigma, dear ones. ����һ���գ��װ������ǡ�
2. The Swords of Destiny is also a clue to a greater enigma. ����֮��Ҳ����һ����������ŵ�������
3. I have read the first homework problem several times but can't understand it. Maybe you can help me with this enigma. ���Ѿ������о��˵�һ�μ�ͥ��ҵ������ǻ���û�и㶮��Ҳ�����ܰ��ҽ������š�
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n.
1. something that baffles understanding and cannot be explained
2. a difficult problem