1. I am puzzled by his failure to reply. �������һ���ʹ�Ҹе�����
2. But whom would my puzzle be about? ���ҵ����ォ���ǹ���˭���أ�
3. How to solve the "Jungle", "Cave Entrance" and "Swamp" puzzle? ��ν�������֡�������Ѩ����ڡ��͡�����֮����?
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n.
1. a particularly baffling problem that is said to have a correct solution
2. a toy that tests your ingenuity v.
1. be a mystery or bewildering to
2. be uncertain about; think about without fully understanding or being able to decide