畫龍點睛（畫龍點睛）　

◎ 畫龍點睛 huàlóng-diǎnjīng

[add the touch that brings a work of art to life;add a word or two to clinch the point;put life into sth.like dotting the eyeball in painting a dragon] 以唐·張彥遠《歷代名畫記》所述張繇僧畫龍點睛的故事,比喻繪畫、作文在緊要之處加上一筆,使其靈活而有神