string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B7%98%E5%AE%9D%E5%BA%97%E9%93%BA%E5%81%9A%E6%8E%A8%E5%B9%BF%E6%9C%89%E7%94%A8%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
淘宝店铺做推广有用吗
