string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%82%B8%E4%B8%9C%E8%A5%BF%E7%94%A8%E6%B7%80%E7%B2%89%E8%BF%98%E6%98%AF%E7%94%9F%E7%B2%89%E6%88%96%E7%B2%98%E7%B1%B3%E7%B2%89 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
炸东西用淀粉还是生粉或粘米粉
