The sum of the two numbers is seven.

Please sum up your idea.

Let me sum up the main points of the presentation.

He received a lump-sum payment when he retired.

I made a lump sum payment for my car.

I made a lump-sum purchase of all the furniture for my new apartment.

Can you summarize the main points of the presentation?

Can you give me a summary of the book?

I'm looking forward to the summer.

They reached the summit of the mountain.