perimeter

名詞

1. 1

   周長數學

   Calculate the perimeter of a rectangle that measures six by four meters.

   請計算一個六公尺乘四公尺長方形的周長。

2. 2

   周圍、外圍、邊界

   A tall fence runs along the perimeter of the school grounds.

   校園的外圍架著一道高高的圍籬。

3. 3

   防線、警戒線軍事

   Guards patrol the perimeter of the base around the clock.

   警衛全天候巡守基地的防線。