pipe earth

例句：

1. 1.The engineer carefully studied the geological conditions of the area before deciding to install a new pipeline.
   工程师在决定安装新管道之前，仔细研究了该地区的地质条件。
2. 2.The construction crew used pipe earth to reinforce the foundation of the new building.
   建筑工人使用管道土来加固新建筑物的基础。
3. 3.The pipes were buried deep underground to prevent damage from groundwater seepage.
   管道被深埋在地下，以防止地下水渗透造成的损害。