环球慢速英语 阳光净化水(3)（在线收听）

Voice 1: Rose Longwa is a mother with five children. Rose has seen her children suffer from severe sickness many times. Some village children have even died from conditions related to drinking dirty water. Ndolela village is luckier than some. A water collection point pumps piped water into the village. It has to come a long way. When the water arrives it is not clean enough to drink. And anyway, the water often fails to arrive. The pipe may get blocked with leaves or other matter. Sometimes the pipe gets a leak. From time to time the water collection point dries up. Then the women in the village have to get water from a spring. The spring water is not clean either. It contains bacteria and small single cell creatures such as protozoa. The protozoa and bacteria can cause severe stomach infections.

声音1：罗丝·朗瓦是五个孩子的母亲。她看到自己的孩子多次遭受严重疾病的侵袭。甚至有一些乡村儿童死于饮用污水引发的疾病。Ndolela村比其他村庄要幸运。一个集水泵将水输送至村子里。输送路程非常远。输送至村子的水不够干净，不能饮用。而且，经常发生无法将水运送到村子的情况。输水管道可能会被树叶或其他东西堵住。有时这条管道还会泄漏。集水地时不时地会枯竭。这时，村里的女性就不得不从泉里取水。泉水也不干净。泉水里含有细菌和原虫等小型单细胞生物。原虫和细菌会引发严重的胃部感染。

Voice 2: In the past the women have boiled the water. Heating the water to a high temperature kills the bacteria and protozoa. The water is then safe to drink. But it takes a lot of fuel to boil enough water for a whole family. Rose spent most of her day collecting enough wood to boil the water. But now Rose uses solar purification. She uses the sun to clean the water. Rose says,

声音2：过去，女性会烧水。把水煮到高温以杀死细菌和原虫。这样的水就可以安全引用了。但是煮出够全家人引用的水要耗费很多燃料。罗丝一天大部分时间都在收集木头以煮水。不过，现在罗丝用太阳能净化系统。她用阳光来净化水。罗丝表示，

Voice 3: 'It is easy to do. I fill clear plastic bottles with water. Then I place the bottles on the top of my black-painted house — on the roof. The water bottles stay there in the hot sun for a whole day'.

声音3：“方法非常简单。我先用干净的塑料瓶接满水。然后把瓶子放在漆成黑色的房顶上。水瓶要在烈日下放一整天。”