string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%9A%E9%A9%AC%E9%80%8A%E5%BC%80%E5%BA%97%E8%A6%81%E5%A4%9A%E5%B0%91%E8%B5%84%E9%87%91 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
亚马逊开店要多少资金
