美国是一个保险业十分发达的国家，但随着人口的老龄化及医疗费用的升高，老年人家庭及末期疾病患者的经济负担十分沉重。
Insurance is well developed in U. s. But the financial burden is very heavy with aging of population and big medical treatment expenses.
美国是一个保险业十分发达的国家，但随着人口的老龄化及医疗费用的升高，老年人家庭及末期疾病患者的经济负担十分沉重。
Insurance is well developed in U. s. But the financial burden is very heavy with aging of population and big medical treatment expenses.
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