string(301) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%9C%BA%E7%94%B5%E7%9C%8B%E8%B0%81%E7%9A%84%E8%A7%86%E9%A2%91%E6%AF%94%E8%BE%83%E5%A5%BD%E4%B8%80%E7%82%B9%E5%95%8A => Failed to connect to 14.18.117.71 port 38220: Connection refused"
一建机电看谁的视频比较好一点啊
