string(312) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B0%E6%B1%89%E5%86%99%E4%B9%89%E5%8B%87%E5%86%9B%E8%BF%9B%E8%A1%8C%E6%9B%B2%E5%88%9B%E4%BD%9C%E4%BA%8E%E4%BB%80%E4%B9%88%E6%97%B6%E6%9C%9F => Failed to connect to 125.88.227.171 port 38114: Connection refused"
田汉写义勇军进行曲创作于什么时期
