meals on wheels
noun [ U ] uk/ˌmɪəlz ɒn ˈwiːlz/ us/ˌmɪəlz ɑːn ˈwiːlz /
上门送餐服务（为老人及病人送饭上门的免费或廉价服务）
a service that takes hot meals to the homes of old and ill people, either for free or for a small payment
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