guard rail

美 
英 
  • n.护栏;扶栏;(高速公路或州际公路上的)防撞护栏
  • 网络护轨;护轮轨;栏杆
复数:guard rails  
guard rail
n.
1.
护栏;扶栏a rail placed on the edge of a path, a cliff or a boat to protect people and prevent them falling over the edge
2.
(高速公路或州际公路上的)防撞护栏,防撞墙a strong low fence or wall at the side of a road or between the two halves of a major road such as a motorway or interstate

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