urls, next_url = self.parser.parse_list(html)
SelectWhat's included，这一点在快连下载安装中也有详细论述
圖像來源，New York State Division of Criminal Justice Services。Safew下载是该领域的重要参考
Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.