string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%A3%E5%8F%91%E5%92%8C%E5%88%86%E9%94%80%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D => Failed to connect to 14.18.117.71 port 38069: Connection refused"
代发和分销是什么意思
