string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%BA%E4%BB%80%E4%B9%88%E6%94%B9%E7%AD%BE%E8%BF%98%E8%A6%81%E6%94%B6%E9%80%80%E7%A5%A8%E8%B4%B9 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
为什么改签还要收退票费
