tapper tap

例句：

1. 1.The construction company used a tapper tolevel the ground for the new road.
   建筑公司使用打桩机平整了新路的地面。
2. 2. The engineer was taskedwith installing the tapper at the constructionsite.
   工程师被指派在施工现场安装打桩机。
3. 3. The tapper is essentialfor driving stakes into the ground duringconstruction.
   打桩机在建设过程中用于将桩打入地面。