清洗供水系统是他们的首要任务。
有毒的化学药品进入了供水系统。
这个地区有良好的天然排水系统。
沙里埋入砖块，以改进排水系统。
城市规划师决定建一个地下排水系统。
The city planner decided to build an underground drainage system.
这个封闭循环是供水系统的一部分，“滴滴珍贵”。
This closed loop is part of a water-supply system in which "every drop counts".
如果没有排水系统，地下水位就会上升，把溶解的盐带到地表。
If no drainage system exists, the water table rises, bringing dissolved salts to the surface.
在这里，水可能以冰的形式储存数百年甚至数十万年，然后再以融水的形式释放到液态水系统中。
Here water may be stored in ice form for hundreds or even hundreds of thousands of years before being released again into the liquid water system as meltwater.
如果地下水位与地表相交，地下水将在泉水处流出地表，聚集于此或是随后沿着排水系统进一步流动。
If the water table intersect the land surface, groundwater will flow out onto the surface at springs, whether to be collected there or to subsequently flow farther along a drainage.
夏天，鳟鱼从Koocanusa湖逆流而上50英里，到不列颠哥伦比亚威格沃姆河的排水系统产卵。
In the summer, bull trout forge 50 miles upstream from Lake Koocanusa to spawn in the Wigwam River drainage in British Columbia.
密西西比河和密苏里河水系是北美最长的水系，全长3902英里。
The river system of the Mississippi River and the Missouri River is the longest river system in North America at 3,902 miles.
一边是林立的为公务员修建的新公寓，它们有奢华的厨房、埋入茂盛草坪的洒水系统。
On one side stand new apartment buildings for civil servants, with luxury kitchens and a sprinkler system embedded in the lush lawn.
加州已经遭受旱灾多年，某些地区甚至不得不从数百英里外抽取淡水，输送到他们的给水系统中。
California has been facing a drought for many years now, with certain areas even having to pump freshwater hundreds of miles to their distribution system.
我们应当建立太阳能热水系统。
这个公园的排水系统很好是件好事。
有时候直接流进附近的给排水系统。
它也属于长江水系，长年多雨。
The city has many rivers, belonging to the Yangtze River system.
排水系统一直是市政服务的主要问题。
Drainage has always been the main problem among municipal services.
今天就去为你的水池买一套纯净水系统吧。
对排水系统来说这是个坏消息。
如果空气当中的汞进入到水系中，会产生剧毒。
Airborne mercury can change into a highly toxic form after falling into waterways.
“这是全世界最省钱的净水系统之一，”他说。
"It's one of the most cost-effective water treatment systems in the world," he says.
太阳能热水器的另一部分为储水系统。
The second part of the solar water heater holds the water for the system.
最后，经过回收的水又流回了冲水系统。
第一次测试后，研究人员使用二氧化氯清洗了供水系统。
After their first tests, the researchers cleaned the water system with chlorine dioxide.
火灾自动洒水系统的运用就属于这种风险控制。
The use of automatic fire sprinkler systems fits into this category.
水的污染源主要来自工业、农场以及排水系统。
The pollutants that affect water come mainly from industries, farm, and sewerage systems.
改善防雨遮檐和排水系统，帮助保护文物免受天气损害和偷盗。
Better roofs and drainage will help protect relics from weather damage and theft.
他们送孩子到私立学校上学，有自己的供电供水系统。
They send their kids to private schools. They have their own water and electricity.
淋浴、泡浴和洗衣会将这些药品直接冲到污水系统中。
Showers, baths and laundry wash those drugs directly into the sewage system.
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