// console.log(spanner.next(60)); // 输出1（正确）
Global news & analysis，详情可参考Safew下载
Almost all coal-fired power plants in the US had the ability to comply with rules limiting their emission of dangerous pollutants such as mercury that can cause brain damage in children. Despite this, Donald Trump’s administration decided to demolish the standards anyway.，更多细节参见WPS下载最新地址
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