您要查找的是不是：
- perched permanent ground water 永久悬着地下水,常静滞地下水
- A deep-rooted plant that obtains water from a permanent ground supply or from the water table. 地下水湿生植物一种根很深的植物，从永久性地下水资源或潜水面获取水分
- Seepage from land fills can pollute ground water or surface. 填土的渗漏可能污染地下水和地面水。
- Poisons used on farms and in homes can enter ground water. 在农场和家庭使用的毒物可以进入地下水。
- The quality of the ground water made some improvement. 地表水水质有所改善。
- This solution describes a spreading of a ground water mound. 这个解描述地下水丘的扩展。
- Ground water levels fall. Rivers get drier and drier. 地面水位下降。河流变得更干燥。
- Ground water is also obtained for human use by sinking wells. 人们也通过挖井来获取地下水以供使用。
- Ground water is usually removed by man through wells. 地上水一般是由人们从井里汲上来。
- The flow of ground water is toward streams, lakes, or oceans. 地下水经流的方向是朝向河流、湖泊或海洋的。
- Recovery of ground water may require especially delicate tactics. 利用地下水，需要有特别完善的方案。
- Seepage from land fills can pollute ground water or surface water. 填土的渗漏可能污染地下水和地面水。
- This means that the SETI receiver was perched permanently above the Arecibo dish at the base of the aging line feed antenna. 也就是说SETI的接收器永久的占据着阿雷西博碟型天线上老化的线性馈源的底部。
- The peak ground water level was analyzed on simulation. 仿真分析了地下水位的峰值。
- Ground water levels fall,rivers get drier and drier. 地下水位下降，河流越来越干涸。
- Ground water is the carrier and moving force of the mud irruption. 突泥是以地下水作为动力和载体而产生的；
- Slow degradation of ground water quality may result from repeated use. 循环使用地下水可以导致缓慢的水质降低。
- Also,management of ground water sources in the rural area will be tightened. 另外，需要加强郊区城镇地下饮用水源的管理。
- The Romans did not trust ground water since it was usually contaminated. 由于地下水常遭污染，罗马人不相信它。
- Ground waters originating in different beds commingle. 来源于不同层位的地下水相互混合。
