研究人员得出结论，电子交流是青少年唯一一项在心理健康下降的同时增加的活动。

The researchers conclude that electronic communication was the only adolescent activity that increased at the same time psychological wellbeing declined.

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研究人员得出结论，猫的捕猎方式可能是基于它们利用听觉推断猎物位置的常识能力而发展起来的。

The researchers conclude that cats' hunting style may have developed based on their common sense abilities to infer where prey is, using their hearing.

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研究人员得出结论，猫的捕猎方式可能是通过使用它们的听觉，基于它们的常识性能力来推断猎物的位置而培养起来的。

The researchers conclude that cats' hunting style may have developed based on their common-sense abilities to infer where prey is, using their hearing.

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