（三）采取预售方式销售房地产项目；
A low threshold preserves detail (more leaf nodes, less compression). A high threshold merges aggressively (fewer leaves, more compression, but the image gets blocky). The grid overlay shows the quadtree structure: large cells in uniform areas, small cells where detail is preserved.
，更多细节参见搜狗输入法下载
Gerd Baumgarten
Everything was shot in vertical mode, and nothing was subtle.