The ejecta from volcanoes help to elucidate the geological history of the Earth.

He was skilled in using an ancient weapon, a chain with a weight on one or both ends.

He is working on his job with all his might.

He always follows me around, just like a goldfish's poop.

He couldn't hide his indignation at his dishonesty.

I got excited when I heard his voice.

What is this powder?

The mood of this restaurant is very calm.

He was resentful of the unfair treatment.

He tackled his work with the fury of a lion.