Perimeter
01
周长
the total length of the external boundary of something
例子
The geometry student calculated the perimeter of the rectangular garden to determine how much fencing would be needed.
几何学生计算了矩形花园的周长，以确定需要多少围栏。
In her math homework, she had to calculate the perimeter of various shapes, including triangles, squares, and pentagons.
在她的数学作业中，她不得不计算包括三角形、正方形和五边形在内的各种形状的周长。
02
周边, 边缘
the margins at the outer edge of an area
例子
Security personnel were stationed at the perimeter of the concert venue to control the crowd and prevent any disturbances.
安保人员被部署在音乐会场地的周边，以控制人群并防止任何骚乱。
The wildfire fighters focused on containing the blaze within the perimeter to prevent it from spreading to residential areas.
消防队员专注于将火势控制在周边范围内，以防止其蔓延到居民区。
