I've had a part-time job as a nursing assistant at a home for elderly people.

home 在这里不是指"家"，而是指"养老院"或"老人之家"这种专门为老年人提供居住和护理服务的机构。在英语中，home 可以引申为"收容所""疗养院"等提供长期居住照顾的场所。