gully head protection

例句：

1. 1. The construction crew used a gully head protection to prevent the workers fromfalling into the deep crevice.
   施工队使用了一个沟渠头部保护装置，以防止工人掉入深沟。
2. 2. The engineerdesigned a gully head protection that wouldprotect the workers from falling rocks during excavation.
   工程师设计了一种沟渠头部保护装置，可以在挖掘过程中保护工人免受落石的伤害。
3. 3. The gully head protectionwas installed at the entrance of the constructionsite to ensure the safety of workers andequipment.
   在施工现场入口安装了沟渠头部保护装置，以确保工人和设备的安全。