N-UNCOUNT 阵亡将士纪念日(美国的法定假日，在大多数州为5月的最后一个星期一) In the United States, Memorial Day is a public holiday when people honour the memory of Americans who have died in wars. Memorial Day is celebrated in most states on the last Monday in May. 阵亡将士纪念日(美国的法定假日，在大多数州为5月的最后一个星期一)