string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%AF%B4%E8%AF%B4%E5%AF%B9%E8%B7%A8%E5%A2%83%E7%94%B5%E5%95%86%E7%9A%84%E4%BA%86%E8%A7%A3 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
说说对跨境电商的了解
