When we withdraw into underground dwellings, the surface ground now occupied by cities can be turned over to park and to wilderness for recreation.

当我们撤到地下居所时，现在由城市占据的地面便可让位于公园和荒野，供人们休闲娱乐。

youdao

It is shown that underground group cavities significantly amplify the surface ground motion nearby.

数值结果表明，地下洞室群对附近地面运动具有显著的放大作用。

youdao

However, the displacement and deformation of surface ground by underground mining have destroyed initial equilibrium between the building and the ground.

但是由于地下开采引起地表产生的移动和变形，破坏了建筑物与地基之间的初始平衡状态。

youdao

When there is fresh snow on the ground, the surface of the snow takes in, or absorbs,sound waves.

VOA: special.2010.01.05

The islands natural surface and ground-water resources can only cover about 10% of the demand at present.

UNESCO: MEDIA SERVICES

Less than a mile above the crater, it sweeps the surface with ground-probing radar and begins its descent: a hundred miles per hour, fifty, twenty.

NEWYORKER: The Martian Chroniclers

It is expected to reveal the less salubrious parts of Roman London outside of the City walls with archaeologists anticipating to encounter Roman timber-framed buildings and a street surface 6m below ground level.

BBC: Crossrail dig unearths forgotten London