n.困惑；使人困惑的事物
She looked at us in perplexity. 她茫然地看着我们。
He wrinkled up his forehead in perplexity. 他困惑地皱起了眉头。
It's a problem of such perplexity that it was impossible to solve. 那是个复杂得无法解决的问题。
