My eyes hurt.

This job is a little more difficult than I thought.

Syoku is a kind person.

His back was very broad, giving a sense of strength.

His Japanese ability is improving gradually.

This mutetrahedron plays a very important role in the world of mathematics.

Fumiko wrote him a letter.

He is an important character.

This room is six tatami mats in size.

In arid regions, there is little rain, making it difficult for plants to grow.