She is researching about the chastity belts of medieval Europe.

He opened the window to let fresh air into the room.

I bought a new drying machine.

In this chemical experiment, we will use litharge.

Listening to his story, I indulged in reminiscences of my childhood.

He reminisced about his youth and smiled.

The shape of a hyperbola is very unique and has interesting mathematical properties.

He eats meals like sake lees and rice bran every day.

He is known as a perspicacious person.

The park in early spring makes you feel the breath of fresh greenery.