Chronic disease is a disease that persists for a long time and is rarely cured completely.

慢性疾病是一种持续很长一段时间的疾病，并且很少完全治愈。

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Chronic disease is a disease that persists for a long time and is rarely cured completely.

慢性疾病是一种持续很长一段时间的疾病，并且很少完全治愈。

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