您要查找的是不是：
- Guards patrolled the perimeter of the airfield. 卫兵沿机场四周巡逻。
- Poor health may be a barrier to success. 健康欠佳可能成为取得成功的障碍。
- 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 horse took the barrier easily. 那匹马轻松地越过了障碍。
- The barbed wire fence round the perimeter discouraged intruders. 周围有铁丝网阻止了外人闯入。
- He have get over the language barrier. 他已克服了语言障碍。
- A large crowd crushed past (the barrier). 大群的人挤过了(障碍物).
- The crowd linked arms to form a barrier. 群众臂挽著臂组成人墙。
- They soon overcame the language barrier. 不久他们便克服了语言上的障碍。
- Guards had been posted at several points around the perimeter. 在环形防线上已布置了几处岗哨。
- The ice skater rammed into the barrier. 溜冰者撞到护栏上了。
- The lorry shaved the barrier, scraping its side. 那辆卡车掠过路障，刮坏了车身。
- perimeter barrier 外围屏障；周界屏障
- A floating barrier serving to contain an oil spill. 浮木档栅一种漂浮的档栅，用来阻止流失的油份
- The government has lift trade barrier on foreign car. 政府已解除了对进口小气车的贸易壁垒。
- A fence marked the perimeter of the field. 一道篱笆标明了那块田地的周界。
- The plane stalled, flipped over onto its back and crashed near the perimeter. 飞机失速了，翻了一个跟头，坠毁在机场环形围栏附近。
- How am I to find the perimeter in the dark? 我在黑暗里怎么看出周围的警戒线呢?
- Heavy duties on imports and exports are a barrier to international trade. 进出口的高关税是国际贸易的障碍。
- Work out how long the perimeter of the playground. 请你算一算体育场的周长是多少米?
