string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=bps%E6%98%AF%E5%A4%9A%E5%B0%91%E5%85%86%E7%9A%84%E5%AE%BD%E5%B8%A6 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
bps是多少兆的宽带
