He leaned his back against the chair and relaxed.

He subsequently became a famous writer.

The teacher gave me a book.

The teacher gave me some advice.

On a cold night, a hot water bottle is indispensable.

On a cold night, a hot water bottle is necessary.

She washed her body before entering the women's bath.

He washed his body before entering the men's bath.

In the casting factory, the molten metal is kept at a high temperature.

He found a hidden hot spring deep in the mountains.