string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%85%89%E4%BC%8F%E5%B1%8B%E9%A1%B6%E6%9C%89%E5%AE%B3%E5%90%97%E6%9C%89%E8%BE%90%E5%B0%84%E5%90%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
光伏屋顶有害吗有辐射吗
