string(328) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%87%B4%E5%AE%B6%E9%95%BF%E7%9A%84%E4%B8%80%E5%B0%81%E4%BA%A4%E9%80%9A%E5%AE%89%E5%85%A8%E4%BF%A1%E7%9A%84%E5%BB%BA%E8%AE%AE%E6%80%8E%E4%B9%88%E5%86%99%E5%95%8A => Failed to connect to 14.18.117.71 port 38164: Connection refused"
致家长的一封交通安全信的建议怎么写啊
