It’s been raining solidly for an hour now.

到现在为止，雨已经不停一个小时。

Recently they have laid an underground pipeline.

最近他们一条管道。

When he was doing underground work, he was arrested because a renegade informed against him.

他做工作时, 曾因叛徒告密而被捕。

Due to overpumping groundwater, hazard of mantled karst collapse may often take place there.

因过量抽取水，造成覆盖型岩溶塌陷灾害。

The secret service operated against the enemy during the war.

在战争期间对敌方展开工作。

Coal miners have to work under the ground.

煤矿工人须在工作。

My office is a cubby-hole in the basement.

我办公室是在室一个小房间。

An aquifer is a water-bearing rock stratum such as sandstone and chalk.

蓄水层是一些有水岩石层, 如沙岩和白垩岩。

They burred their treasure under the ground.

他们财宝埋在.

The understratum, calcareous sandrock and conglomerate rock, generate dissolution of groundwater.

其部钙质砂（砾）岩在水作用产生溶蚀现象。

She started a chary descent of the stairs.

她开始小心翼翼楼梯。

They caved in the roof of the underground passage with powerful explosives.

他们用强大炸药通道顶部炸塌陷。

The river runs through several underground caves which store the water for the city's use.

这条河流经几处贮存城市用水蓄水池。

Palm celestial being lives in the subterranean coalhole of an old building.

棕仙住在一所老房子煤库。

It is rather damp in the basement.

室很潮湿。

Increased consumption of water has led to rapid depletion of groundwater reserves.

用水量增加导致水贮备迅速枯竭。

Old newspapers and magazines are accumulating in the basement.

旧报纸和旧杂志堆放在室中。

The new underground railway will facilitate the journey to all parts of the city.

新铁路将为去城市各处提供方便。

Subterranean springhead is numerous, reason with " fontal city " famed at the world.

泉源众多,故以“泉城”闻名于世。

It drizzled off and on all day.

整日在时停时续着毛毛雨。