【大发1.5分彩_1.5分彩客户端下载_大发1.5分彩客户端下载】Exhibition of insects held in Xi'an to popularize scientific knowledge

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A child views butterflies at Xi'an Contemporary Art Museum in Xi'an, northwest China's Shaanxi Province, July 14, 2019. An exhibition of insects was held in Xi'an to popularize scientific knowledge and enrich children's life in summer vacation. (Xinhua/Li Yibo)

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