For example, to avoid getting into an infinite loop, and thereby hanging a system, an anti-virus system that uses an emulator (or a sand box) would have to determine when to terminate the analysis.

• 例如，为了避免进入一个无限循环从而挂起系统，一个使用模拟器（或沙箱）的反病毒系统必须决定何时结束分析。