The police used fingerprints to identify the criminal.

It's very easy to walk on this flat road.

The initial response when an earthquake occurs is very important.

My brother is a master of Taido.

This statue is made of copper.

He found an old copper coin.

He is always facing difficulties, just like the proverb 'clouds over the moon, wind in the flowers'.

In the old days, people used to consider milk as an important source of nutrition.

Our opinions differ.

The content of this book is very high quality.