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Photo taken on Jan. 29, 2021 shows an olive tree, which is 400-500 years old, at a park in Petroupoli, a western suburb of Athens, Greece. (Xinhua/Marios Lolos)
Photo taken on Jan. 29, 2021 shows an olive tree, which is 400-500 years old, at a park in Petroupoli, a western suburb of Athens, Greece. (Xinhua/Marios Lolos)