这样得到的控制系统频带较窄、时滞大，还有可能出现控制系统不稳定。
Such assumptions sometimes may result in narrow frequency band, large time delay and unstable system.
版本控制系统试图解决开发人员在试图同时对某个文件进行修改时所出现的冲突问题，可以防止用户覆盖其他人所作的修改。
Revision control systems attempt to address the problem posed by developers trying to alter a file simultaneously, preventing users from overwriting each others' alterations.
视频游戏中涌现出的新颖性带给人无穷乐趣；而空中交通控制系统中如果出现涌现的新情况，就可能导致进入全国紧急状态。
Emergent novelty in a video game is tremendous fun; emergent novelty in our airplane traffic -- control system would be a national emergency.
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