Themes tend to discuss or use the word "theme" when holding activities. What is the theme of today's XXX activity? Like a weekly theme of Happy Camp, it can't be said to be "our topic today". The "theme" is generally attended by people, either for discussion or for viewing.

The theme is the meaning of the article and the title. A theme is a function that points to a theme. It's not the same as a proposition composition.

There can be n paper topics under a topic, just like the sub-topics under a topic. For example, the following 20 thesis topics belong to the topic of international trade theory and policy.

1, analysis of contemporary international division of labor and trade pattern

2. Theoretical and empirical analysis of unequal carbon exchange in international trade.

3. Intra-industry trade research can be divided into countries or regions.

4. Study the development characteristics and trends of contemporary international trade, including service trade.

5. Changes and trends in world market prices