除非我们了解有某种疾病的人，否则我们不会了解疾病。
We cannot understand disease unless we understand the person who has the disease.
“除非我们承认肥胖是一种疾病，否则我们将无法解决它。”他总结道。
"Unless we accept that obesity is a disease, we are not going to be able to tackle it," he concludes.
成熟红细胞的寿命是有限的，它们的产生和凋亡必须保持精确平衡，否则会发生疾病。
Mature RBC have a finite life span; their production and destruction must be carefully balanced, or disease ensues.
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