string(300) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%AF%94%E8%BE%83%E6%88%90%E5%8A%9F%E7%9A%84%E5%9B%A2%E8%B4%AD%E5%B9%B3%E5%8F%B0%E6%9C%89%E5%93%AA%E4%BA%9B%E5%91%A2%E7%9F%A5%E4%B9%8E => Failed to connect to 14.18.46.51 port 38044: Connection refused"
比较成功的团购平台有哪些呢知乎
