string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%87%8D%E5%A4%8D%E9%93%BA%E8%B4%A7%E7%9A%84%E5%AE%9A%E4%B9%89%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
重复铺货的定义是什么
