It's difficult to decipher this chemical equation.

We attended the cornerstone laying ceremony of the new building.

He used a familiar spirit to defeat the enemy.

The closing ceremony of the Olympics was moving.

I learned how to calculate rational expressions in math class.

What is the molecular formula of this compound?

This house is an old-style Japanese house.

This furniture is characterized by its old-fashioned design.

The opening ceremony was very glamorous and moving.

There is an opening ceremony at school tomorrow.