果味酸柯林斯词典

semi-perimeter

S 开头单词

基本解释

  • 半周长

同根派生

     

英汉例句

  • Guards patrolled the perimeter of the airfield.
    卫兵沿机场四周巡逻。
  • semi perimeter
    n. 半周长
  • The perimeter of the airfield is protected by guard-dogs.
    机场外的环形防卫圈由警犬保卫着。
  • The barbed wire fence round the perimeter discouraged intruders.
    周围有铁丝网阻止了外人闯入。
  • Guards had been posted at several points around the perimeter.
    在环形防线上已布置了几处岗哨。