生物医药大词典
英文: perimeter denection?
中文: 隧道周边位移 ?英文: Guards patrolled the prison's perimeter fence.
中文: 卫兵巡查了监狱的四周。英文: What is the perimeter of this oblong.
中文: （这个矩形的周长是多少？）英文: Teacher: What is the perimeter of a circle?
中文: 师：什么是圆的周长？英文: Guards patrolled the perimeter of the airfield.
中文: 卫兵沿机场四周巡逻.