There's no obvious solution to the problem.
這個問題尚無公認的解決辦法。
I managed to find a solution to the problem.
我設法找出了解決問題的辦法。
When would such a solution be possible?
什么情況下可以這么解決？
We need to set about finding a solution.
我們得著手尋找一個解決辦法。
Do you have a better solution?
你有更好的解決辦法嗎？