One of the charms of the world's most famous painting is that she appears radiant one moment and then serious and sardonic the next.

世界最著名的油画《蒙娜·丽莎》的魅力之一，就是蒙娜·丽莎有时看起来笑容可掬，而有时却严肃而面带嘲讽之色。