She is conducting research on the world's oldest profession.

He roughly carved the wood into shape.

In linear algebra, the upper triangular matrix plays a very important role.

His blood congealed with fear.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

Understanding the concept of 'Ha-line conversion sounds' is important in learning Japanese.

He goes fishing in the sea every day.

I will go to school.

He was lying face-up, looking at the stars.

Listening to music is really enjoyable.