He is doing special exercises to strengthen his dilator muscle.

A voluntary muscle is a muscle that we can consciously move.

His service record is very excellent.

I went to see a movie by myself.

Watching a movie alone is enjoyable.

This weir was built to regulate the water level of the river.

He picked up the small torch and illuminated the darkness.

This river has a beautiful pebbled riverbed.

This math problem requires finding the product.

He got married and entered a new family register.