美国作家欧·亨利在他的小说《最后一片叶子》里讲了这样一个故事:病房里,一个生命垂危的病人看着窗外的一棵树,树叶在秋风中一片片地掉落下来。病人望着眼前的萧萧落叶,身体也随之每况愈下。她说:“当树叶全部掉光时,我也就要死了。”一位老画家得知后,用彩笔画了一片叶脉青翠 The American writer O. Henry told a story in his novel “The Last Leaf.” In the ward, a dying patient looked at a tree outside the window, and the leaves fell down in the autumn wind. The patient looked at the rustling leaves in front of him and his body went from bad to worse. She said: “When all the leaves fall out, I will die.” An old painter learned that he used a colored pencil to paint a green leaf.