有些人坐在上面约10厘米，地面以下部分大约相同距离的会议。
Some are above ground sitting up about 10 centimetres and some sitting below about the same distance.
研究团队在两个不同地点的地面以下一公里处安置高敏感电气设备。
The team placed highly sensitive electrical devices about one kilometer below ground in two different places.
这座三层的住宅位于一个倾斜的地块上，部分楼体淹没在下行地面以下。
The three-storey residence is positioned on a sloping plot and is partially submerged in the descending ground.
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