It's difficult to solve this formula.

We attended his memorial service.

The calculation of determinants is an important part of mathematics.

I learned how to create formulas in math class.

He created a formula to solve the problem.

I love Doria-style dishes.

He threw the first ball at the ceremonial first pitch.

The Hepburn romanization is very useful for foreigners learning Japanese.

Today, there is an induction ceremony for new employees.

I attended the unveiling ceremony of the new park.