string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E9%9E%8B%E5%8F%B737%E6%98%AF%E7%BE%8E%E5%9B%BD%E7%9A%84%E5%A4%9A%E5%B0%91%E5%8F%B7 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
中国鞋号37是美国的多少号
