“帘外蛛丝网落花、也要留春住”。好友劝我写一篇短文,介绍“老生常识”。反复考虑,我决心仿效蛛丝,从我所处的时代和个人的经历,网住几片落花,也算留下一点历史痕迹吧！ 但是事端纷纭,加以所知有限,也只能谈其一 “Screen spider silk screen flowers, but also to stay spring.” My friend advised me to write an essay on “common sense of the old man.” Repeatedly, I am determined to follow the example of my own time and personal experience. However, as we all know, there are different opinions and we can only talk about one