Ditching includes all excavation work required to provide a ditch of the specified dimensions and depth of pipe cover.

挖沟指为提供规定尺寸和管子埋设深度的管沟所需的全部挖土工作。

youdao

He and his team have barely scratched the surface and the project will require many years of excavation work before it is completed.

他和他的团队还没有触及地面，该项目将需要许多年的挖掘工作才完成。

youdao

The plinth foundation excavation work was divided by two stages the first one was ordinary excavation, the second one was rock excavation.

趾板基础开挖分两期进行，一期为一般开挖，二期为岩石开挖。

youdao

The hole was the result of excavation work being carried out at the site.

BBC: Firefighters at the scene

Heavy excavation work began late at night and into the early morning on Thursday.

FORBES: Three Buildings Collapse In Rio de Janeiro

Surveyors are currently on site and the excavation work will start on 10 December.

BBC: Weymouth ferry terminal repair works begin