London Underground伦敦地铁;伦敦地铁公司;伦敦地下铁;音画英国伦敦地铁
underground building地下建筑;地下建筑物
Tokyo Underground东京地底奇兵;东京地下城;东京公开城;东京公然城
Pop Underground地下流行;地下流行乐
Underground Parking地下停车场;地下停车
UNDERGROUND CINEMA地下电影;公开电影
underground space地下空间;地下空间开发利用;地下喉管
by underground乘地铁;乘坐地铁;坐地铁
underground tank地下储罐;地下水槽;地下水箱;[建] 地下水池
The study on stability of underground structures resisting the uplift load is being adverted.
研究与探讨地下结构的抗浮稳定性问题,日益受到国内外学者的重视。
参考来源 - 嵌岩桩与扩底桩抗拔承载特性数值分析It can cause the space in rock underground when the underground coal exploited.
地下煤炭开采必然会形成采空区。
参考来源 - 宽条带跳采全采注充岩层控制机理与地表变形预测研究ADV（副词） Something that is underground is below the surface of the ground. 在地下 [ADV after v]
Solid low-level waste will be disposed of deep underground.
低放射性固体废物将被弃置在地下深处。
ADJ（形容词） Underground is also an adjective. 地下的 [ADJ n]
...an underground parking garage for 2,100 vehicles.
…一座能停放2100辆车的地下停车库。
N-SING（单数型名词） Theunderground in a city is the railway system in which electric trains travel below the ground in tunnels. 地铁 [英国英语]['the' N, also 'by' N]
I don't travel on the underground late at night.
我深夜不坐地铁。
ADJ（形容词） Underground groups and activities are secret because their purpose is to oppose the government and they are illegal. 秘密的; 地下的 [ADJ n]
...the underground Kashmir Liberation Front.
秘密的克什米尔解放阵线。
ADV（副词） If you go underground, you hide from the authorities or the police because your political ideas or activities are illegal. 秘密地; 在地下 [ADV after v]
After the violent clashes of 1981 they either went underground or left the country.
1981年的暴力冲突之后，他们要么转入地下了，要么离开了这个国家。