His life was like a stormy sea.

His life was truly like a storm and stress.

His life was truly a stormy one.

Whenever he faced a difficult situation, he always said, 'The best of the Thirty-Six Stratagems is to run away.'

In this chemical reaction, cyclohexane is the main product.

Cyclopentane is a compound often used in organic chemistry.

Cyclooctane plays an important role in organic chemistry.

This compound has cyclohexadecane as its main component.

I used cyclononadecane in an organic chemistry experiment.

This compound contains cyclotetradecane.