string(280) "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%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
2021芯片行业的发展趋势是什么
