I used cyclononadecane in an organic chemistry experiment.

This compound has cyclohexadecane as its main component.

This compound contains cyclotetradecane.

This compound mainly consists of cyclotridecane.

Nice to meet you.

He has a sturdy body.

This compound is called cyclopentadecane.

There are many beautiful Japanese star anise trees in this park.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.