aged-child ratio

例句：

1. 1. The hospital's policy on aged-child ratio is to limit the number of children in each ward to ensure proper care for the elderly patients.
   医院的老年儿童比例政策是限制每个病房的儿童数量，以确保为老年人患者提供适当的照顾。
2. 2. The study found that the aged-child ratio in the city was higher than the national average, indicatinga need for more resources for elderly care.
   研究发现，该市的老年儿童比例高于全国平均水平，表明需要更多资源来照顾老年人。
3. 3. The government has been working to improve the aged-child ratio in rural areas by providing more educational and healthcare services for the elderly.
   政府一直在努力提高农村地区的老年儿童比例，通过为老年人提供更多的教育和服务。