He went through great hardship to complete the project.

He experienced great hardship to complete the project.

He is majoring in psychology at university.

I will go to the hospital for a medical examination and treatment today.

The invaders took away our peace.

In order to solve this unsettled question, everyone's cooperation is necessary.

The children were playing rock paper scissors in the park.

Let's play rock-paper-scissors during today's lunch break.

The Jinan incident of 1928 was an important event in Chinese history.

He explained the meaning of '唵阿毘羅吽欠'.