I learned how to calculate matrices in math class.

Hearing about his success, I'm really happy.

He saw the character '憂', and remembered his deceased friend.

His face was filled with distress.

This sofa is made of polyurethane.

This product is selling very well.

The sales of this new product are unexpectedly good.

I was surprised by his extreme anger.

The Tenpō calendar is one of the traditional calendars of Japan.

It is said that a wandering spirit appears in that old house.