tracing ground water

• 找水

tracing ground water的用法和样例：

例句

1. We had to drill down 200 feet to find water.
   我们只好往地下钻两百英尺找水。
2. Every growing city, each trying to lure people and industry, is scouring for water.
   每一座发展中的城市都在四处找水，他们需要吸引人们来定居生活，需要工业化的大生产。