1. Maintain, to preserve or keep things as they are.
2. Our quality is excellent, so your job is to maintain our high standards and improve them if you can.
3. These historic buildings are very old and need to be maintained.
Because of economic competition, maintaining peaceful relations isn’t easy .（前文未见生句）
4. Disrupt, to cause disorder or confusion.
5. Smartphones have disrupted the way we live our lives.
6. Investors want to invest in companies that disrupt the way things are done.
Sometimes disruptive technologies change the world in ways we don’t like .（前文未见生句)
7. Settle, to calm things down or end a conflict or disagreement.
8. He is too upset to think clearly, so he needs to settle down.
9. If we can't agree, we'll have to go to a court to settle our differences.
they refuse to negotiate ,so I’m afraid the only way to settle the dispute will be through war .（前文未见生句)
10.Solve, to figure out or find the answer or solution to a problem.
11.The problem is difficult, so we need to find a way to solve it.
12.We can't solve that problem without using a computer.
they couldn’t solve the problem until they could clearly define it .（前文未见生句)
13. Prove, to use evidence or logic to support an idea.
14.The police had to release him because they couldn't prove that he committed the crime.
15.The best way to prove that something can be done is to do it.
we can’t prove that he was there unless we can find more evidence .（前文未见生句)
They need a strong leader to bring themtogether and settle their differences .（前文未见生句）
