string(257) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9E%8B%E5%AD%9037%E7%A0%81%E6%98%AF%E7%BE%8E%E5%9B%BD%E5%A4%9A%E5%B0%91%E7%A0%81%E5%91%A2 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
鞋子37码是美国多少码呢
