This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.
FT Professional，这一点在WPS官方版本下载中也有详细论述
The transaction is transmitted throughout the network.，详情可参考Line官方版本下载
直到2015年前后，我才见到阿爸的生父，那时他已经长时间卧床不起了，瘦得只剩骨架，脸色发灰，眼睛却还睁着。阿爸站在床边，还是和之前一样，叫了一句“客边”。后来，“阿英”和“客边”都相继去世了。