string(261) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cad%E5%9B%BE%E6%96%87%E4%BB%B6%E5%A4%AA%E5%A4%A7%E4%BA%86%E6%80%8E%E4%B9%88%E7%BC%A9%E5%B0%8F => Failed to connect to 101.89.143.195 port 38205: Connection refused"
cad图文件太大了怎么缩小
