Authenticating a user at the server without first invalidating existing sessions can lead to what is termed session fixation.
在服务器上验证一个用户之前，如果没有首先使现有会话失效，可能会导致所谓的会话固定。
You aren't just back seat driving when you constrain an expert to rules, you are invalidating their hard-won instinct and intuition.
当要求专家遵守规则的限制时，就不仅仅是坐在后面座位对司机指手画脚了，你正在对他们很少出错的本能和直觉提出质疑。
This can include invalidating sessions, canceling timers, canceling callback handlers or cleaning up any data structures that may need it.
清理可能包括终止会话、取消计时器、取消回调处理程序或清理可能需要的任何数据结构。
The lifetime is most likely bounded by an expiration time, especially in a distributed environment where invalidating a token can be quite a challenge.
很可能通过一个过期时间来界定生存期，特别是在分布式环境中，要使一个令牌失效是非常困难的。
This way, if a cache file is removed at any step of the transformation chain, it has the effect of invalidating all dependent Butterfly cache files, forcing their recreation.
这样，如果在转换链的任何阶段删除了缓存文件，将使所有的相关Butterfly缓存文件无效，必须重新创建这些文件。
Yahoo is forcing all of the affected users to change their passwords and it is invalidating the security questions.
雅虎正在让这些安全问题失效，同时强行要求所有受影响的用户修改自己的密码。
You must be able to correct yourself without invalidating or condemning yourself, to accept results and improve on them.
你必须能不否定或谴责自己的情况下纠正自己，接受结果、不断改进。
You must be able to correct yourself without invalidating or condemning yourself, to accept results and improve on them.
你必须能不否定或谴责自己的情况下纠正自己，接受结果、不断改进。
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