string(370) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%AE%80%E8%BF%B0fabe%E9%94%80%E5%94%AE%E6%B3%95%E5%88%99%E5%88%86%E5%88%AB%E5%AF%B9%E5%BA%94%E7%9A%84%E5%9B%9B%E4%B8%AA%E6%96%B9%E6%B3%95%E5%8F%8A%E5%85%B6%E4%B8%AD%E8%8B%B1%E6%96%87%E5%90%AB%E4%B9%89 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
简述fabe销售法则分别对应的四个方法及其中英文含义
