string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%99%A4%E7%94%B2%E9%86%9B%E6%9C%80%E5%A5%BD%E7%9A%84%E5%8A%9E%E6%B3%95%E6%98%AF%E4%BB%80%E4%B9%88%E5%91%80 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
除甲醛最好的办法是什么呀
