couplets造句
        a poem written in rhyming 
couplets用押韵对句写成的诗
In traditional antithetical 
couplets, the two parts are strictly antithetical.
传统的对联要求上下两句完全对仗.
The Chinese paste spring 
couplets on the gateposts when celebrating Spring Festival.
中国人在庆祝春节的时候会在门柱上贴春联.