We all wish for world peace.

My dream is to travel the world.

I am doing volunteer work to contribute to the community.

His research made a significant contribution to the scientific community.

The friendly relationship between China and Japan greatly contributes to world peace.

Today is the middle day.

His house is very big.

Yuko is my best friend, he always helps me.

We have built a long-standing friendship.

He got an amazing victory by getting a 'peace', a no points hand in mahjong.