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1. In this study, we focused on the effects of stress on cognitive performance.
在这项研究中，我们关注了压力对认知性能的影响。
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2. The researcher used a focusing scale to measure the intensity of the light.
研究者使用一个聚焦尺度来测量光线的强度。
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3. The scientist developed a focusing scale to detect minute changes in the environment.
科学家开发了一个聚焦尺度来检测环境中微小的变化。