Hard to find clean earth: With polluting factories often unwilling to pay to make improvements, the United States government specially made money available from its "super fund" for cleaning up toxic wastes to give funds for research and improvement of damaged ground.
汙染工廠往往付不出改良成本，美國政府就特別由專門處理公害糾紛的「超級基金」，撥錢來從事研究、改良受傷的土地。