barrier cone

例句：

1. 1. The barrier cone is used to preventpeople from entering the restricted area.
   障碍锥用于防止人们进入受限区域。
2. 2. The construction workersused the barrier cone to mark the boundaryof the construction site.
   建筑工人使用障碍锥来标记施工场地的边界。
3. 3. The barriercone was placed at the entrance of therestricted area to ensure safety.
   在受限区域入口处放置了障碍锥以确保安全。