string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E8%8A%AF%E7%89%87%E8%A1%8C%E4%B8%9A%E7%9A%84%E5%8F%91%E5%B1%95%E8%B6%8B%E5%8A%BF%E5%A6%82%E4%BD%95 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
2021芯片行业的发展趋势如何
