(单词翻译:单击)
When only the federal government can print money, all the states use the same type of currency (or the type of money used in a country).
只有当联邦政府有权印刷货币时，所有的州才能使用相同的货币（或一个国家使用的币种）。
Another power of the federal government is to declare war (or to say that a war is beginning).
联邦政府的另一项权力是宣战（或宣布战争的开始）。
Obviously this power should exist only at the national level, because it doesn't make sense for one or two states to declare war against another country.
很明显这项权力只应归国家所有，因为一两个州对另一个国家宣战是讲不通的。
Wars should happen only between countries.
战争只应该发生在国与国之间。
A third power of the federal government is to create an army (or the large group of people and organizations that fight to protect a country).
联邦政府的第三项权力是创建军队（或为保家卫国而战的一大批人或组织）。
States can have police that work within the state, but not armies that fight internationally or in other countries.
各州可以有州警察，而没有在国际上或其在他国家作战的军队。
Finally, the federal government can make treaties (or official agreements between countries).
联邦政府的最后一项权力是签订条约（或国家之间的官方协议）。
For example, the United States is involved in NATO, spelled "N," "A," "T," "O," which stands for the North Atlantic Treaty Organizations, at the national level.
例如，美国以国家的身份加入了北约，北约是北大西洋公约组织的缩写。
Individual states do not need to participate in NATO because the entire country participates in it at the federal level.
单个州不需要加入北约，因为整个国家以联邦政府的身份加入了该组织。
译文为可可英语翻译，未经授权请勿转载！
