string(328) "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%E5%9C%A8%E6%8B%BC%E5%9B%A2%E4%B8%AD%E5%8F%AF%E4%BB%A5%E4%B8%AD%E9%80%94%E9%80%80%E6%AC%BE%E5%90%97%E6%80%8E%E4%B9%88%E9%80%80%E7%9A%84 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
拼多多在拼团中可以中途退款吗怎么退的
