Solveis finding the correct solution to a logical problem after analysis. It implies that you understood the problem, and deal with it successfully. It is used for something that is not easy without taking complicated measures or thinking process.
Solve强调的是找到了解决问题的正确方案。解决的问题通常是抽象的逻辑问题。比如找到了解决一个数学难题的方法。
Solve
Fixis making a physical changeto something, is used for something that takes concrete procedures. Although you can fix something, you may not understand the problem, you may just did something and the problem went away. You fixed it, but you don’t understand why.
You can fix a car, but you can't fix a mystery or a math problem.
If there is a body or concrete things that are broken, you fixit. You never solveit. You sometimes hear people say, "Can you fix me (up)?", but you don't hear "Can you solve me?"
Fix是指通过实实在在的动作处理实实在在的问题。需要注意的是，一个人能fix一个问题，不意味着这个人明白问题出现的原因。
Fix
Resolvemeans the end of a conflict or a problem. When you resolve something (a problem, an issue), you have completed it, it is done. Although it is done, it doesn’t mean you dealt with it correctly. Resolve only means you had concluded it with one way (of many possible choices).
"The issue has been resolved, although none of us is happy with the outcome."
Resolvetypically concerns emotional problems.
"Resolve a dispute."
Resolve强调的是结束了一个事项，比如问题、分歧等。但也许解决问题的方案不那么好。
英
resolve是决定,决心,分解的意思
solve 是解决问题的意思
moral和morality,前者是形容词后者是名词,都是道德