Level 5 · word 6,209 of 20,000
perimeter
/pəˈrɪmɪtər/
American
- n. 周长, 边界
- Definition
- n. the outer edge or boundary of an area, or its total length
- Example
- Guards walked around the perimeter of the building all night.
- 警卫整夜绕着大楼的四周巡逻。