zhè / fù / duì lián / qiǎo miào / yùn yòng / le / huí wén / zhèng dú / fǎn dú / dōu / tōng shùn

这副对联巧妙运用了回文，正读反读都通顺。

This couplet skillfully uses palindrome, reading smoothly both forward and backward.