string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%BF%AB%E8%80%83%E8%AF%95%E4%BA%86%E4%BD%86%E6%98%AF%E7%B2%BE%E8%AE%B2%E8%BF%98%E6%B2%A1%E7%9C%8B%E5%AE%8C => Failed to connect to 101.89.166.210 port 38089: Connection refused"
二建快考试了但是精讲还没看完
