以下为句子列表：
英文: A new process for synthesis of 7-DHC based on cholesterol and the innovation technology for synthesis of vitamin D3 by photochemical reaction have been developed by the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences, and t
中文: 中国科学院理化技术研究所开发了一条从胆固醇合成7-DHC的新路线，提出了一条光化学合成维生素D3的创新技术路线，并已经转让实施。
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英文: An innovative process for synthesizing vitamin D2 by photochemical reaction is also put forward.
中文: 同时还提出一条光化学合成维生素D2的创新技术路线。
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英文: In present paper, the discovery of vitamin D and their syntheses by using photochemical reaction were introduced and reviewed.
中文: 摘要本文报道了维生素D的发现以及它们的光化学合成与进展。
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英文: Prolonged exposure to direct sunlight or fluorescent light causes a photochemical reaction that will adversely affect the beer's taste and create an offensive odor.
中文: 长时间的光照会产生光化学反应，使啤酒的味道发生逆转并产生异味。
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英文: The photochemical reaction of humic substance in water
中文: 水环境腐殖质的光化学研究进展
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