health tourism
noun [ U ] uk/ˈhelθ ˌtʊə.rɪ.zəm/ us/ˈhelθ ˌtʊr.ɪ.zəm/
医疗旅游（指到国外接受治疗，特别是因为那里比自己国家便宜）
travel to a foreign country for medical treatment, especially because it is less expensive than in your own country
The Health Secretary wants to stamp out health tourism whereby foreigners come to Britain for free treatment on the NHS. 卫生大臣希望杜绝所谓的医疗旅游，也就是外国人专门到英国来享受NHS免费治疗。