He thought deeply and said, 'I think, therefore I am.'

He strongly believes in the philosophical thought, 'I think, therefore I am.'

The study of nekton is an important part of marine biology.

A new play structure has been installed in the park.

A new play structure has been installed in the park.

I went to the station through the underground passageway.

Yuu is hanging out the laundry.

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

Akihiro went to see the first sunrise of the year.