A geographical information system containing details of household water use and sanitation in the villages was built using data obtained by a global positioning system survey.
采用全球定位系统调查获得的数据，建立一个地理信息系统，包含村庄中家庭用水和卫生用水的详细情况。
2
If we took a quick surveyin Africa - How many people would choose a 1 millions shirts over malaria drugs or accessible clean water?
如果我们做一个简单的调查，提供一百万件衬衫或疟疾药、用水，人们会选哪一样呢？
3
A field survey was carried out to determine whether households obtained drinking water from deep tube Wells installed in 2005.