对成千上万的人正在建设铁路，电厂，机场，水泥工厂，公寓楼，和官方建筑。
Tens of thousands of others are building railroads, power plants, airports, cement factories, apartment blocks, and official buildings.
环境署称，水泥工厂是美国空气中汞污染物的第四大来源，每年产生约23000磅（10400公斤）的汞污染物。
Cement plants are America's fourth-largest source of airborne mercury, generating about 23, 000 pounds (10, 400 kilograms) a year, EPA says.
众议院还针对环境保护局对水泥工厂的规定，以250对177票通过了一项修正案，禁止环保局使用经费来执行或者实施其规定。
The House also targeted the EPA's regulations on cement plants, approving in a 250-177 vote an amendment prohibiting the agency from using funds to implement or enforce the rule.
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