被观察变量的某 种所偏好的状态(preferred state),对于这个状态,行动总是在任何干扰之后都倾向于返 回去的状态。这个状态就是控制系统目的的可观察的反映。
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In fact, that's their preferred state is suspended in a fluid where nutrients are widely available to them, and where they can swim from one spot to another in order to get the nutrients they need, or in order to run away from toxic compounds.
事实上,细菌更喜欢生活在,营养丰富易得的悬浮液中,它们可以从一个点游动到另一点,以获取所需营养,或逃离有毒物质
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