If you find something perplexing, you do not understand it or do not know how to deal with it.
例句
It took years to understand many perplexing diseases...許多疑難病癥要耗時數年才能搞明白。British Parliamentary procedure is perplexing at the best of times.即使在最好情況下，英國議會的程序也很費解。
英漢詞典釋義
adj.
使人困惑的;令人費解的
This might seem very perplexing to those who know nothing about it.這對那些對它一無所知的人來說可能顯得很難理解。
英英詞典釋義
Adjective
1. lacking clarity of meaning; causing confusion or perplexity;
"sent confusing signals to Iraq""perplexing to someone who knew nothing about it""a puzzling statement"