string(325) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%9F%E6%B4%BB%E4%B8%AD%E7%9A%84%E8%B6%A3%E5%91%B3%E7%89%A9%E7%90%86%E7%8E%B0%E8%B1%A1%E5%8F%8A%E8%A7%A3%E9%87%8A1000%E5%AD%97%E6%80%8E%E4%B9%88%E5%86%99 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
生活中的趣味物理现象及解释1000字怎么写
