必背句型:

A:I want to know the acts of sovereignty.
我想了解主权行为。
B:A state alone can perform acts of sovereignty on its territory.
只有国家才能在自己的领土上行使主权行为。
Only a state can perform acts of sovereignty on its territory.
只有国家才能在自己的领土上行使主权行为。
The department alone can make the decision.
只有这个部门才有决策权。
Only the department can make the decision.
只有这个部门才有决策权。

延伸阅读:
A:Being sovereign and equal to others,a state has certain rights and corresponding duties.
作为独立，平等的主权国家，既享有某些权利，也承担相应的义务。
B:Rights and duties connect with each other.
权利和义务彼此联系。
Every one has certain rights and corresponding duties.
每个人享有某些权利，也承担相应的义务。
What is the relation between certain rights and corresponding duties?
某些权利和相应义务之间是什么关系？