state,nation和nation-state的区别请从政治意义上分析,并分别举例,例如中国属于哪一种

嗯 我不太会翻译 就用英文解释了
nation can be understood as the integration of the whole people in one state, in political field, nation has fewer meaning than state, in the political theories, as realism, they state that state is the only actor in international relation, the highest authority. Of cause, in liberalism and constructivism, it is not. U will find that nation is not mentioned very often, to compare with state. Thus, China is both a state and a nation. U can simply think that state is more material and nation is more subjective.
About nation-state, I think it means single nation country. For example, South Korea.
All my own opinions, hope they can help. Good luck~

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