在许多国家，数以百万计的灌溉井现在从地下水源抽水的速度，超过了降雨所能再次填满的速度。
Millions of irrigation wells in many countries are now pumping water out of underground sources faster than rainfall can refill them.
由于地下水位下降，灌溉井干涸，居于世界之首的中国小麦产量，已经从1997年1.23亿吨的峰值下降了8%。
As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.
印度农民钻取大约2000万口灌溉井，地下水位因之不断下降，水井也开始枯竭。
In India, where farmers have drilled some 20 million irrigation Wells, water tables are falling and the Wells are starting to go dry.
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