/ˈrɪŋˌfɛns/ – Verb
Definition: Bảo vệ, cô lập hoặc hạn chế một phần cụ thể của tài sản hoặc hoạt động.
A more thorough explanation: 1. to enclose a piece of land; to prevent something (especially a land development) from getting any bigger
2. to guarantee that money intended for a particular purpose will not be spent on anything else
Example: 1. A ring-fenced parcel of grazing land is situated between the villages of Rusper and Newdigate.
2. We are calling on the UK government to ring-fence fuel duty for investment in alternative transport.