string(257) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%81%9A%E8%B7%A8%E5%A2%83%E7%94%B5%E5%95%86%E7%9A%84%E8%A1%80%E6%B3%AA%E6%95%99%E8%AE%AD => Failed to connect to 101.91.112.32 port 38195: Connection refused"
做跨境电商的血泪教训
