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机译:从保加利亚、罗马尼亚、格鲁吉亚和TBS出发的过山车航程价格看起来持平
机译:Bulgaria, Romania plan two joint hydropower plants on Danube
机译:Bulgaria, Romania plan two joint hydropower plants on Danube
机译:A comparison of health system responses to COVID-19 in Bulgaria, Croatia and Romania in 2020