perimeters是什么意思？

perimeters

• n. 周边( perimeter的名词复数 )，周围，边缘，周长；

例句

• Examples include outdoor perimeters , traffic monitoring, tunnels, and car parks. 例子像户外围墙; 交通监视; 隧道和停车场.

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  外缘；边缘
  The perimeter of an area of land is the whole of its outer edge or boundary.
  例句
  ...the perimeter of the airport... 机场四周 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。