string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BE%8E%E5%9B%BD7%E7%A0%81%E7%9A%84%E9%9E%8B%E5%AD%90%E6%98%AF%E5%A4%9A%E5%A4%A7 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
美国7码的鞋子是多大
