...opposition leaders, who are working underground because of the threat of arrest.

underground passages/caves/streams

地下通道 / 洞穴 / 溪流

I always travel by underground.

我总是乘地铁。

an underground terrorist organization

地下恐怖主义组织

Tourist: Yes. The nearest underground station.

游客: 是的.最近的地铁站.

Then I walk to the nearest underground station.

然后我步行去最近的地铁站.

Fifth : Do not try to Square underground station in the shopping plaza.

其 五: 尽量不要在车站广场的地下广场买东西.

They are on underground station.

她们在中山公园地铁站.

She turned her back on the street and descended into the underground station.

她从街上转身走下地铁站.

How do I get to the underground station?

请问如何前往地下铁路站?

Shall we meet at Xidan underground station, then?

那麽我们就在西单地铁站见面好 吗 ?

Would you please direct me to the nearest underground station?

可以请你告诉我最近的地铁站怎么走 吗 ?

Underground water is the main water supply in Suihua Area.

地下水是绥化地区的主要供水水源.

The temperatue of a cold fountain is determined by underground water temperature.

冷泉的温度应该是取决于地下的水温.

Overexploiting underground water will cause land subsidence.

过分的开采地下水,会造成地面下陷.

Presents the design of the underground water system and control system.

介绍了水源热泵地下水系统及其控制系统的设计.

Elsewhere rainfall ranges from modest to abundant, and rivers and underground water permit extensive irrigation.

其他地区的降雨量有的适中,有的充足, 河流和地下水源可用作大面积的灌溉.

Underground erosion is the removal of solids, from the soil by the flow of underground water.

地下侵蚀是指固体颗粒被地下水流从土壤中带走的现象.

In general, the quality of underground water is good.

地下水水质总体良好.

I detected a slight movement in the undergrowth.

我发现灌木丛中有些动静.

The murder weapon was found concealed in undergrowth.

杀人凶器被发现藏在灌木丛中。