
n.周長;周界;邊緣
Work out how long the perimeter of the playground. 請你算一算體育場的周長是多少米?
Guards patrolled the perimeter of the airfield. 衛(wèi)兵沿機場四周巡邏。
A fence marked the perimeter of the field. 一道籬笆標明了那塊田地的周界。
The barbed wire fence round the perimeter discouraged intruders. 周圍有鐵絲網(wǎng)阻止了外人闖入。