But while improved medical technology may improve the outcome of those diseases, rising levels of obesity among U.S. children threaten to roll back life expectancy, he says.
他说，虽然医疗技术的进步会改善这些疾病的结果，但美国孩子肥胖率的增高正威胁着人们对寿命的预期。
But while improved medical technology may improve the outcome of those diseases, rising levels of obesity among U.S. children threaten to roll back life expectancy, he says.
他说，虽然医疗技术的进步会改善这些疾病的结果，但美国孩子肥胖率的增高正威胁着人们对寿命的预期。
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