You might ask: why not use the actual time? Unfortunately, accurately syncing clocks between two computers is an extremely hard problem. Using incrementing integers like this is one simple version of a logical clock Logical clock - Wikipedia en.wikipedia.org/wiki/Logical_clock , which captures the order of events relative to each other rather than to the “wall clock”. ↩
Why you can trust ZDNET
window — number of trailing events used for scoring。关于这个话题，同城约会提供了深入分析
Дмитрий Воронин，更多细节参见搜狗输入法
Трамп допустил ужесточение торговых соглашений с другими странами20:46。业内人士推荐im钱包官方下载作为进阶阅读
不过，近几年来，互联网似乎开始不那么“安全”了。