隧道周边的英文：
tunnel perimeter

tunnel是什么意思：
n. 地下通道；洞穴
v. 挖掘隧道；打开通道
  • The engineers sank a tunnel into the ground.
    工程师们在地下挖了个隧道。
  • The exit of the tunnel is concealed.
    地道的出口开在隐秘的地方。
  • A tunnel was to be blasted through the mountains.
    一条隧道要被炸开，穿山而过。
  • They drove a tunnel through a hill.
    他们通过小山挖一隧道。
  • The roof of the tunnel fell in.
    隧道顶部塌了下来.。
perimeter是什么意思：
n. 边界；外缘；周长
  • What is the perimeter of the polygon?
    这个多边形的周长是多少?
  • Iverson has the penetration ability and perimeter.
    艾佛森拥有突破和外围投射能力。
  • A fence marked the perimeter of the field.
    一道篱笆标明了那块田地的周界。
  • 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。
  • Guards have been posted at several point around the perimeter.
    在环形防线上已布置了几处岗哨。

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