string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BC%80%E9%9B%B6%E9%A3%9F%E5%BA%97%E8%BF%9B%E8%B4%A7%E8%A6%81%E5%87%86%E5%A4%87%E5%A4%9A%E5%B0%91%E9%92%B1 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
开零食店进货要准备多少钱
