ground tap

例句：

1. 1. The workersground tapped the concrete toprepare it for pouring.
   工人们用地面敲击器敲打混凝土以准备浇筑。
2. 2.The sound of the ground tap echoedthrough the forest.
   地面敲击声在森林中回荡。
3. 3. The ground tap was a signthat the construction was coming to an end.
   地面敲击声是建筑即将结束的标志。