“画龙点睛”出自唐朝张彦远《历代名画记·张僧繇》。后用以比喻写作文或讲话时，于关键处用一两警句点明要旨，使内容更为精辟有力。

Zhang Sengyao， a painter of theSouthern and Northern Dynasties， waswell k（试读）...