string(340) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9B%B4%E7%BB%95%E4%B8%AD%E5%BF%83%E5%8F%A5%E5%86%99%E4%B8%80%E4%B8%AA%E6%AE%B5%E8%90%BD%2C%E9%95%87%E4%B8%8A%E7%9A%84%E9%9B%86%E5%B8%82%E7%9C%9F%E7%83%AD%E9%97%B9%E5%95%8A => Failed to connect to 14.18.117.71 port 38093: Connection refused"
围绕中心句写一个段落,镇上的集市真热闹啊
