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The brain is the ultimate computing machine, so it's no wonder researchers are keen to try and emulate it. Now, new research has taken an intriguing step in that direction - a device that's able to 'forget' memories, just like our brains do. 大脑是终极计算机器，所以研究人员热衷于尝试模仿它也就不足为奇了。现在，新的研究朝着有趣的方向迈出了一步，也就是一种能够像我们的大脑一样“忘记”事情的设备。 It's called a second-order memristor (a mix of "memory" and "resistor"). The clever design mimics a human brain synapse in the way it remembers information, then gradually loses that information if it's not accessed for an extended period of time. 它被称为二阶忆阻器（结合了“memory”（存储器）和“resistor”（电阻器）这两个词）。这种灵巧的设计模仿了人脑突触记忆信息的方式，也就是说，如果它长时间不接触信息，就会逐渐失去这些信息。 While the memristor doesn't have much practical use just now, it could eventually help scientists develop a new kind of neurocomputer – the foundation of artificial intelligence systems – that fulfils some of the same functions a brain does. 虽然忆阻器目前还没有什么实用性，但它最终可能有助于科学家开发出一种可以实现部分大脑功能的新的神经计算机，这也是人工智能系统的基础。 | 
