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来源：雅诚德英语网
On the 20th anniversary of the first official report on AIDS, the head of the United Nations' AIDS program warns the deadly disease may only be at its early stages in many parts of the world.
在第一份关于艾滋病的官方报告发布20周年之际，联合国艾滋病规划署的负责人警告说，这种致命的疾病在世界许多地方可能还处于早期阶段。