[; ]in the US, a government system for finding and cleaning up places where dangerous waste has been thrown away超级基金（在美国，旨在找出并清理丢弃有害废物的场所的政府制度）◆The Environmental Protection Agency cleans up an average of 86 superfund sites a year.环境保护署平均每年清理 86 块超级基金场地。