It appears the mind regards a doorway as something experts call an ‘event boundary’, signalling the end of one memory episode and the beginning of another.

我们大脑似乎会将门视为所谓的“事件边界”（专家术语），标志着一个记忆场景的结束和另一个新记忆场景的开始。

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This means that database manager automatically determines the upper boundary on memory consumption.

这意味着数据库管理器自动确定内存使用的上限。

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If you're monitoring the polarization for a logic device or memory element, you can apply a small electric field to traverse this boundary and simultaneously read and write the on-and-off state.

如果这一极性的有无能够被逻辑装置或是记忆元件测得，我们就可以用一微弱电场来改变其极性，同时获知极性的有无状态。

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Police officers are taking part in a charity walk around the Greater Manchester boundary in memory of two officers who were killed on duty.

BBC: PC Fiona Bone and PC Nicola Hughes