These brains will fail to learn from their mistakes and are less likely to improve over time.

这样的大脑将不能从错误中学习，因此减少随时间推移而改进的可能。

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We can use this technique of challenging our brains to improve our abilities.

我们能够运用此项挑战我们大脑的技术来增进我们的能力。

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And in many ways we can — if we keep ourselves healthy — actually improve our brains.

如果我们保持自己的健康，我们可以在很多方面真正改善我们的大脑。

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"It proves we can retrain and improve our brains, " she says.

CNN: STORY HIGHLIGHTS