string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%A1%E7%89%B9%E5%B0%94%E6%98%AF%E5%86%AF%E7%89%B9%E7%9A%84%E5%AD%A6%E7%94%9F%E5%90%97%E7%9F%A5%E4%B9%8E => Failed to connect to 101.89.117.144 port 38005: Connection refused"
卡特尔是冯特的学生吗知乎
