[求助]大虾帮忙翻译两句话-第1页

In plain English:

I have tried very hard to answer these questions; however, there are still a number of confusing issues that need to be addressed. I hope that my study of the Theory of XXX will lead me to answers to these last few unresolved questions.

If the setting of your paragraph is more formal, you might say:

Although I have invested tremendous effort to address the questions above, a number of important and perplexing issues still exist. I am hopeful that, through the study of the Theory of XXX, I will be able to resolve these outstanding questions.