string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%9F%E7%B2%89%E5%92%8C%E6%B7%80%E7%B2%89%E9%82%A3%E4%B8%AA%E5%81%9A%E8%8F%9C%E5%A5%BD => Failed to connect to 61.171.74.35 port 38027: Connection refused"
生粉和淀粉那个做菜好
