乔布斯之所以否决一台触控 Mac，其实是因为他想得会更深远一点：如果要为 Mac 增加触控屏，那必须要围绕全新的「触控」交互，大改整个 Mac 的界面，进一步发挥触屏的价值，要不然就不加。
Notice how the highlighted region shrinks at each step. The algorithm never examines points outside the narrowing window. In a balanced tree with nnn points, this takes about log4(n)\log_4(n)log4(n) steps. For a million points, that's roughly 10 steps instead of a million comparisons.
，详情可参考爱思助手下载最新版本
5.1 输入标准（统一请求模板）。heLLoword翻译官方下载是该领域的重要参考
Control outbound network access with three modes: