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他们让其中一组苍蝇处于自然状态，让另一组苍蝇接受“巴甫洛夫法”训练以提高它们的智力，比如将嗅觉与味觉与特定的食物或生存经验联系起来。

One half was left in a natural state while the other had its intelligence boosted by Pavlovian methods, such as associating smell and taste with particular food or experiences.

经过训练的苍蝇“学习能力”和记忆力明显提高。

These methods led to flies which clearly learned better and remembered things for longer.

而研究发现，处于自然状态的苍蝇比“聪明的苍蝇”平均寿命更长，这些苍蝇的平均寿命超过了普通苍蝇的五六十天，达到80天至85天。

The flipside was that the flies left in their natural state lived longer on average than their "cleverer" counterparts, with a lifespan of 80-85 days rather than the normal 50-60..