He claimed that he could create a clone of himself.

He made a call using an old rotary dial telephone.

There is beautiful black bamboo planted in my garden.

I used cycloundecane in an organic chemistry experiment.

In this chemical reaction, cyclododecane is the main product.

In the organic chemistry experiment, we succeeded in synthesizing cycloicosane.

I add a little black pepper to the soup.

I like to add black pepper to the soup.

I like to add black pepper to the soup.

Chromium has the property of changing color depending on its oxidation state.