畫龍點睛 [詞典] bring the painted dragon to life by putting in the pupils of its eyes; add the finishing touch; add a word or two to clinch the point; a crucial touch which drives home a point otherwise difficult to explain; [例句]這盞燈對我的房間的裝飾起了畫龍點睛的作用。This light adds the crowning touch to my room decoration.

畫龍點睛

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

make the finishing point

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