- 请详细地解释。
Please explain in detail.
- 谁解决了这个难题?
Who solved the hard problem?
- 什么也无法解释。
Nothing can be explained.
- 请你为我解释规则好吗?
Would you please explain the rules to me?
- 我很难解决这个问题。
I had difficulty working out the problem.
- 这个问题都被解决了。
The matter is all settled.
- 这个问题仍然未解决。
The problem remains unsolved.
- 没有人能够解决这个问题。
Nobody can solve this problem.
- 我明白怎么解决问题。
I understand how to solve the problem.
- 这个项目我大致了解。
I know about this project for the most part.