Discover all the plans currently available in your country
但无论是 OLED 像素发光还是 LCD 背光板发光，它们发出的都是（近似）全向的光线——你能看到，你旁边的人也能看到：
。关于这个话题，heLLoword翻译官方下载提供了深入分析
TechCrunch Daily News
The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.