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1. The background fluorescence from the street lamps illuminated the night scene.
街灯发出的背景荧光照亮了夜晚的景象。
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2. In this study, we observed the background fluorescence of a sample under different conditions.
在这项研究中，我们观察了样品在不同条件下的背景荧光。
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3. The researchers found that the background fluorescence in the samples could be reduced by usinga special filter.
研究人员发现，通过使用特殊的过滤器，可以降低样品中的背景荧光。