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(220117) -- MELBOURNE, Jan. 17, 2022 (Xinhua) -- A staff walks by signs requesting to wear protective face masks and to keep a social distance at Melbourne Park in Melbourne, Australia, Jan. 17, 2022. The Australian Open 2022 kicked off on Jan. 17, 2022. (Xinhua/Bai Xuefei) 17.01.2022 Melbourne Tenis Australian Open 2022 FOTO Bai Xuefei / Xinhua / PressFocus POLAND ONLY!!