今年暑期邮轮价格战的重灾区，就是这些短航线。当价格跌破底线，吸引来的就是图便宜的大爷大妈，然后自助餐疯狂浪费，体验进一步恶化，形成恶性循环。
Games and physics simulations need to detect which objects are touching or overlapping. With nnn objects, checking every pair is O(n2)O(n^2)O(n2) comparisons, which gets expensive fast. A hundred objects means roughly 5,000 pair checks. A thousand means nearly 500,000.，这一点在同城约会中也有详细论述
。关于这个话题，im钱包官方下载提供了深入分析
This sounds reasonable until you see how easily it goes wrong:，更多细节参见heLLoword翻译官方下载
“赋能共建‘一带一路’国家发展内生动力”