string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9C%BA%E7%A5%A8%E8%BF%94%E7%8E%B0%E7%A0%8D%E4%BB%B7%E6%9C%89%E6%88%90%E5%8A%9F%E7%9A%84%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
机票返现砍价有成功的吗
