先说一个小故事。从前有一位盲人,外出路过一座小木桥。小桥年久失修,盲人踩塌桥板,直坠桥下。慌乱中他一把抓住了桥栏,悬空吊在桥上。过了好久,盲人双臂酸又疼,快要支持不住了。他恨不得马上松开双手,但又怕下面是万 Let’s talk about a little story Once upon a time, there was a blind man walking outside a small wooden bridge. Bridge disrepair, Blind stepped on the bridge, straight down the bridge. He caught the bridge in a panic, hanging suspended from the bridge. After a long time, the blindness of the arm and soreness of the blind man was almost overwhelmed. He could not wait to release his hands immediately, but he feared the following ten thousand