string(319) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%96%E9%9F%B3%E6%B8%85%E4%BA%86%E7%BC%93%E5%AD%98%E5%90%8E%E4%B8%BA%E4%BB%80%E4%B9%88%E5%86%85%E5%AD%98%E8%BF%98%E6%98%AF%E9%82%A3%E4%B9%88%E5%A4%A7 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
抖音清了缓存后为什么内存还是那么大
