1. This is indeed a perplexing problem. ��ȷʵ��һ���ѽ�����⡣
2. The issues we have raised in this section are among the most perplexing in economics. �������������۵���Щ�����Ǿ���ѧ������۸��ӵ����⡣
3. The relation between economic development and morals is a big problem of perplexing current Chinese theoretical circle. ���÷�չ����µĹ�ϵ���������ŵ����й��������۽��һ�����⡣
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adj.
1. lacking clarity of meaning; causing confusion or perplexity