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Celebration of annual Earth Hour campaign held across world

Source: Xinhua| 2018-03-25 07:58:43|Editor: Jiaxin
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U.S.-NEW YORK-EARTH HOUR?

The combo photo taken on March 24, 2018 shows the Empire State Building before (up) and after the lights are dimmed for the Earth Hour event in New York, the United States. (Xinhua/Li Muzi)

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KEY WORDS: Earth Hour campaign
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