您要查找的是不是：
- 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。
- underground manhole 下水道人孔盖; 下水道检修孔
- 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。
- The cavers discovered a vast underground chamber. 探穴人发现了一个地下大洞穴。
- 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。
- Someone is working in the manhole. 有人在（锅炉的）检修孔中工作。
- There is an underground car park near the supermarket. 这个超市附近有一个地下停车场。
- I need to find a manhole tool... 我需要找个通道盖子工具...
- Here's the question: Why are manhole covers round? 这个问题是：为什么下水道井盖都是圆的?
- 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。
- Or the manhole cover outside your apartment? 还是你公寓外面的下水井盖?
- Why are manhole cover round in shape? 点解下水道的盖是圆形的?
- He joined the underground to fight against the fascists. 他参加了地下组织与法西斯作战。
- Please move the manhole cover away. 请将人孔盖移开。
