活动规则匹配中间事实生成活动项，比如通知和指令。
Action rules match on the intermediate facts to generate action items, such as notifications and directives.
因此，向罗森博格发出威胁的人看来就是那个给杀手发指令的神秘中间人。
And so whoever had made the threats to Rosenberg appeared to be the same mysterious inside man who had given instructions to the killers.
注意，CMPXCHG指令是原子性的，这意味着在这个指令结束之前没有可见的中间状态。
Note that the CMPXCHG instruction is atomic, which means that there is no intermediate visible state of the system before this instruction finishes.
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