This is a tough question. I have never heard about it, nor have I ever read about it
2. Give me a few seconds for me to search every piece of information in my head now.
3. It is an abstract question. I know little about it.
4. Are you asking me something about+你重复一下句子中的重要词…?
5. Have I given enough information? It would be great if you could give me more.
6. Am I making myself clear?
7. Now you want me to talk about it. But I don't have too much to say.
8. Give me a few seconds for me to organize my thought a little bit