if (done) break;
What if you create a truly unique routing profile that's wildly different from the common ones for which shortcuts were pre-calculated? The system is smart. If it detects that too many shortcuts (~50, for example) need on-the-fly recalculation and deviate significantly, it might determine that falling back to the original, comprehensive A* algorithm for the entire route would actually be faster than doing many small, heavily modified A* calculations.，详情可参考51吃瓜
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因为在夜场工作，结婚5年后，丈夫便与她离婚，并阻止儿子与她见面。“他跟儿子说，你妈妈是贪慕虚荣的人，不要我们啦。”Maggie姐相信，总有一天，儿子会明白，会回来找她，“妈妈不是贪慕虚荣的人，要是的话，别人送我房子我早就跟他走了。”
Beth Alaw WilliamsBBC Wales。关于这个话题，WPS官方版本下载提供了深入分析