string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8B%BC%E5%A4%9A%E5%A4%9A%E8%BD%AC%E5%8C%96%E7%8E%87%E5%8F%97%E4%BB%80%E4%B9%88%E5%9B%A0%E7%B4%A0%E5%BD%B1%E5%93%8D => Failed to connect to 101.89.159.206 port 38100: Connection refused"
拼多多转化率受什么因素影响
