曾国藩这话是不是很扫人兴？很挫伤人心？
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
，更多细节参见heLLoword翻译官方下载
At least 20 people have died and dozens have been injured after a military cargo plane carrying banknotes crashed while landing near Bolivia’s capital on Friday, damaging about a dozen vehicles on a highway and scattering bills on the ground, an official has said.，这一点在搜狗输入法下载中也有详细论述
Fincke has said he is currently "doing very well" and still participating in standard post-flight reconditioning at NASA's Johnson Space Center in Houston. "Spaceflight is an incredible privilege, and sometimes it reminds us just how human we are," he said. "Thank you for all your support."