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An economic structure dominated by heavy industry is the major factor behind severe air pollution in Hebei.
An array is a collection of telescopes and instruments spread over a wide area, working in concert with one another. The SKA is an international effort by 20 countries, including China, to build the world's largest radio telescope using arrays.
An investigator picks up evidence at the scene where two Brookhaven Police officers were shot and killed in Brookhaven, Mississippi, Sept 29, 2018. [Photo/IC]
An HIV positive patient, not pictured, receives a blood pressure test in Weishi county, Central China's Henan province in this Nov 30, 2015 file photo. [Photo/Xinhua]
An employee promotes cosmetic products via livestreaming at a shop in Hangzhou, Zhejiang province. [Photo by LI YAOHUI/FOR CHINA DAILY]
