string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=u%E7%9B%98%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%BD%B1%E5%93%8D%E5%AF%BF%E5%91%BD%E5%90%97 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
u盘格式化影响寿命吗
