perimeter

英 [pəˈrɪmɪtə(r)]

美 [pəˈrɪmɪtər]

n.  (土地的)外缘，边缘; 周长

复数：perimeters　

CET6TOEFLIELTSGRETEM8医学

Collins.1 / BNC.8620 / COCA.6584

牛津词典

noun

• （土地的）外缘，边缘
  the outside edge of an area of land
  1. Guards patrol the perimeter of the estate.
     保安人员在庄园四周巡逻。
  2. a perimeter fence/track/wall
     围绕四周的栅栏 / 小径 / 墙
• 周长
  the total length of the outside edge of an area or a shape

柯林斯词典

• N-COUNT 外缘；边缘
  Theperimeterof an area of land is the whole of its outer edge or boundary.
  1. ...the perimeter of the airport...
     机场四周
  2. Officers dressed in riot gear are surrounding the perimeter fence.
     身穿防暴服的警察正在包围外围的栅栏。

英英释义

noun

• the size of something as given by the distance around it
  Synonym:circumference
• a line enclosing a plane areas
• the boundary line or the area immediately inside the boundary
  Synonym:marginborder

双语例句

• The plane stalled,# cc0066>flipped over onto its back and crashed near the perimeter.
  飞机失速了，翻了一个跟头，坠毁在机场环形围栏附近。
• Some 300 trees have been ranged along the perimeter hedge
  沿着绿篱栽种着大约300棵树。
• Geometric data of ellipse in hyperbolic space are considered, such as perimeter and mean absolute curvature.
  在双曲空间中，对椭圆的周长及平均绝对曲率做出细致考察。
• He took some perimeter shots, but his jumping was restricted.
  他只是做了一些投篮的练习，但是跳动受到限制。
• These outdoor luminaires were designed for perimeter security illumination and also incorporate occupancy sensors to properly manage energy usage.
  这些户外照明专门为边界安全照明设计，和传感器一起实现妥善地管理能源使用。
• Activities funded include information technology security, bio-identification, perimeter surveillance and weapons detection.
  吸引到资金的领域包括信息技术安全、生物识别、周界监视和武器探测等。
• The barbed wire fence round the perimeter discouraged intruders.
  周围有铁丝网阻止了外人闯入。
• It's the perimeter that poses the greatest problem.
  就是大楼的周长造成了最大的问题。
• They ended up ripping down perimeter fencing and tussling with the security staff
  最终他们拆毁了四周的围栏，与保安人员厮打起来。
• A fence marked the perimeter of the field.
  一道篱笆标明了那块田地的周界。