When a client asks for the time, it sends a random nonce. The server replies with a signed certificate containing both the nonce and a timestamp, proving the response happened after the request. Responses can be chained together with provable ordering; if any server’s timestamps are inconsistent with that ordering, that server is cryptographically “outed” as unreliable.
聯合國人權事務高級專員福爾克爾·蒂克爾（Volker Türk）呼籲各方「保持克制」，並敦促所有當事方保持理性，為局勢降級，重返「談判桌」。。业内人士推荐搜狗输入法作为进阶阅读
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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.。safew官方下载是该领域的重要参考