string(201) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%8B%E5%AD%90%E5%81%A5%E6%98%AF%E4%BB%80%E4%B9%88 => Connection timed out after 30001 milliseconds"
王子健是什么网!