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Apple's Worldwide Developer Conference held in California, U.S.

Source: Xinhua| 2019-06-04 17:05:15|Editor: Wu Qin
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US-SAN JOSE-APPLE-WWDC

Apple Senior Vice President of Software Engineering Craig Federighi speaks during Apple's Worldwide Developer Conference (WWDC) in San Jose, California, the United States, June 3, 2019. (Xinhua)

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