interstate relations

基本解释

During the period a complex system of interstate relations developed.
期间，一个复杂的系统的国家间关系的发展。
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The federal government should do what only it can do, such as national defense, international relations, interstate commerce, and functions that no one state would be able to do like NASA and the Treasury.
FORBES: Guest Post: Priorities
Leaders of the republics met in the Estonian capital, Tallinn, at the end of last week and signed three non-binding 'interstate' protocols concerning trade relations, monetary policy, communications and transport.
CENTERFORSECURITYPOLICY: Center For Security Policy