a topic of general interest的用法和样例：
- The research and development of nanometer-sized solid powdermaterials are a topic of general interest in the material field at present.
- It is a difficult job and a topic of general interest in the present reform of cultivated land expropriation system to expropriate land according to price of the cultivated land.
- With the development of technology of interventional therapy, the application of covered stents in the treatment of cerebrovascular dieses is becoming a topic of general interest.
- Because of its special roles in the fields of electricity,magnetism,etc,research on ultrafine nickel powder is a topic of general interest in the new field of functional material at present.
- At present, it becomes a topic of general interest because it is being used as a side-chain in production of fourth generation Cefpirome.