Sentiment analysis is a branch of natural language processing (NLP) that seeks to quantify positive vs negative perceptions; akin to "tone" analysis.

情绪分析是自然语言处理的一个分支(NLP)，旨在量化积极和消极感知力；类似于“音调”分析。

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Positive aesthetics is not a new branch of aesthetics, but a mode of appreciation of nature.

肯定美学并非一个新的关学分支或研究趋向，而是一种欣赏态度。

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The beam characteristics with positive and negative branch unstable resonators were compared for end-and edge-pumped lasers.

在端面抽运和边缘抽运时，比较了正支和负支非稳腔的输出光束特性。

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While technology doesn't change the physical environment by adding trails or gyms, it can make a positive impact, says competition judge Joan Dorn, branch chief for physical activity and health at the Centers for Disease Control and Prevention.

CNN: Schools given $25K to help kids move