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- Recently they have laid an underground pipeline. 最近他们铺设了一条地下管道。
- The missile is delivered from underground. 这种导弹由地下发射。
- They were suspected of underground activities. 他们被怀疑进行地下活动。
- Moles stay underground most of the time. 钱鼠大部分时间住在地下。
- He went underground to avoid capture. 他转入秘密工作以免被捕。
- Underneath it can be seen an curious underground stream or duct. 在它下面可以看见一奇怪的暗流或输送管。
- The cavers discovered a vast underground chamber. 探穴人发现了一个地下大洞穴。
- Carrying down or away. Used of a duct or vessel. 传送的指通过导管或管道传送下来的或输送的
- The quickest way to go round the city is by underground train. 在这个城市四处走动最快的办法就是乘坐地铁。
- The mole bored (its way) underground. 鼹鼠在地下挖掘(路)。
- The prisoner escaped by digging an underground tunnel. 囚犯挖了一条地道逃跑了。
- Some miners were trapped underground after the collapse. 塌方后，有些矿工被困在地下。
- underground duct 地下管道
- There is an underground car park near the supermarket. 这个超市附近有一个地下停车场。
- A duct often contains cross braces. 管道内往往是有支撑拉条。
- A tube or duct for enclosing electric wires or cable. 线管包裹电线或电缆的管子或沟道
- underground duct system 地道通风系统
- The revolutionist eluded capture for weeks by hiding underground. 那位革命者为避免被捕在地下躲藏了几个星期。
- He joined the underground to fight against the fascists. 他参加了地下组织与法西斯作战。
- A/C duct and vent duct structure of W/H Deck. 驾驶甲板空调、机械风管结构。
