1. 健康;安宁;幸福
    The welfare of a person or group is their health, comfort, and happiness.

    e.g. I do not think he is considering Emma's welfare...
           我认为他没有考虑到埃玛的幸福。
    e.g. He was the head of a charity for the welfare of children.
           他是一个儿童福利慈善机构的负责人。

2. 福利的
    Welfare services are provided to help with people's living conditions and financial problems.

    e.g. Child welfare services are well established and comprehensive...
           儿童福利机构发展成熟，体系完善。
    e.g. He has urged complete reform of the welfare system.
           他极力主张对福利制度进行彻底改革。

3. (美国)社会保障金
    In the United States, welfare is money that is paid by the government to people who are unemployed, poor, or sick.

    e.g. States such as Michigan and Massachusetts are making deep cuts in welfare...
           诸如密歇根和马萨诸塞等州正在大幅削减社会保障金。
    e.g. If she does find a job through the training program she may have less money than now when she's on welfare.
           如果她在培训后真的找到份工作，那她的收入可能还不如她现在领的社会保障金多。