Experts say nearby construction projects and the removal of ground water contributed to the problem.

专家称，是附近建筑项目和清除地下水造成。

These breaks permit gases and ground water to pass through the rock.

这些裂缝允许气体和地下水通过岩石。

We pump the ground water up onto the hills.

把地下水抽到山上。

And when ground water is removed, the earth above it sinks.

当地下水被抽出后，它上面土地就会下降。

Southern California still has low ground water levels.

南加利福尼亚地下水位仍然很低。

" There's not a lot of ground water. The dams are still empty, basically" .

" 地下水不。大坝基本上还是空。"

These materials can enter the ground water and make their way into the ocean.

这些物质可以进入地下水源中，然后进入海洋。

The main cause is that too much of the city's ground water has been pumped out.

主要原因是太市地下水被抽走了。

Too much ground water has been removed while heavy buildings have been built in many places.

该市靠近大海，有13条污染严重河流流经该市。在许地方建造重型建筑时，大量地下水被抽走。

A main cause is the amount of ground water being drawn out from under the city.

其中一个主要原因是市下面大量地下水被抽出。

Jakarta has been slowly sinking. Large amounts of ground water have been extracted from under the city.

雅加达正在缓缓下沉。很大一部分地下水都抽出来了。

Perhaps most interesting, and most easily measured, is a chemical change in ground water before a quake.

也许最有趣、也最容易测量，是地震前地下水发生化变化。

It's used for everything from bathing to industry and when ground water's removed the earth above it sinks.

从洗澡到工业生产，地下水被抽走，上面土地就会下沉。

The World Wildlife Fund says there are thousands of wells in the area taking ground water without permission.

界野生动物基金会表示，该地区有数千口井未经许可抽取地下水。

Jakarta is sinking. The main cause is that too much of the city's ground water has been pumped out.

因为雅加达在不断下沉。主要原因是，该市地下水被过度抽取。

Any leaching from a landfill pit will create recurring difficulties in polluting a farmer's well and the ground water.

填埋坑任何渗漏，都会污染农民水井和地下水而引起不断麻烦。

In Oman's mountain caves, rain and ground water form pools.

在阿曼山洞里，雨水和地下水形成水池。

Jakarta has been slowly sinking. A main cause is the amount of ground water being drawn out from under the city.

雅加达一直在缓慢下沉。其中一个主因是市下面大量地下水从被抽出。

First, it's a desert area, so there's only a small volume of ground water available.

首先，这里是沙漠地区，因此可用地下水量很少。

And the small amount of ground water is not the only limiting factor.

少量地下水并不是唯一限制因素。