Cyclooctane plays an important role in organic chemistry.

I used cyclononadecane in an organic chemistry experiment.

This compound contains cyclotetradecane.

This compound mainly consists of cyclotridecane.

He was immersed in music.

He is doing a special exercise to strengthen his temporoparietalis muscle.

He made a copy of the report.

He copied my report.

The sweet pea flowers are blooming, making the garden very beautiful.

He is known as an excellent copywriter.