/pɚˈplekst/

adjective
confused and anxious because you are unable to understand sth; showing this 困惑的;迷惑不解的
a perplexed expression
困惑的表情
She looked perplexed.
她看来茫然若失。

verb
if sth perplexes you, it makes you confused or worried because you do not understand it 迷惑;使困惑 SYN puzzle
They were perplexed by her response.
她的答复令他们困惑不解。