| [/pəˈrɪmɪtə(r); pəˋrɪmətɚ/] n 用法:
1 (length of the) outer edge of a closed geometric shape 周; 周边; 边缘; 周长. 用法:
2 boundary of an area 周围的界限:
Guards patrolled the perimeter of the airfield. 卫兵沿机场四周巡逻. *
[attrib 作定语] the perimeter fence 周围的篱笆. Cf 参看 circumference. |