The separation of powers,which is the basic of the system of checks and balances,has two levels of meanings:the separation of powers between the federal government and the state government; the separation of powers among the different branches of the government. 三权分立,这是基本的制衡制度,有两个层次的含义：联邦政府与州政府之间的权力分离,政府的不同部门之间的权力分离.
