Cyclopentane is a compound often used in organic chemistry.

Cyclooctane plays an important role in organic chemistry.

He used a metal detector to search for treasure on the beach.

Spending time with family on Christmas night is the best.

I want to eat a beef bowl.

The lens of this camera is easy to attach and remove.

He always plays minor parts in the theater company.

He participated in the anti-war movement.

He sighed deeply.

He was holding a small bamboo basket in his hand, collecting vegetables.