string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9D%AD%E5%B7%9E%E5%85%AC%E4%BA%A4%E8%BD%A6%E9%95%BF%E5%BA%A6%E5%A4%9A%E5%B0%91%E7%B1%B3 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
杭州公交车长度多少米
