罗斯福是美国历史上唯一连任四届的总统。他不仅治国有略,而且教子有方。他的四个儿子在二战中浴血战火,连立战功,之后又都跻身美国政坛。 Roosevelt is the only president in the history of the United States to be reelected for four terms. He not only rule the country a little, but also teaching children. His four sons fought bloody battles in World War II and won the war of merits, then both became American politicians.