string(265) "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%8A%A8%E9%94%80%E7%8E%87%E5%A4%9A%E4%B9%85%E8%AE%A1%E7%AE%97%E4%B8%80%E6%AC%A1 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
淘宝动销率多久计算一次
