bufferedEnd = audioElement.buffered.end(i);
经济增长既需要生产要素的积累，也要依托全要素生产率持续提高。提升全要素生产率，关键在于促进各类先进要素向发展新质生产力集聚。。雷电模拟器官方版本下载对此有专业解读
先理解原理：看动图 + 手动模拟小数组，详情可参考safew官方版本下载
Shortcut Pre-calculation: For the most commonly used speed profiles, the travel costs (time/distance) for shortcuts between border points within each cluster are pre-calculated and stored. (Each border point effectively has an "entry" and "exit" aspect for directed travel).