He was closely observing the umbo of the shell.

The shell height of this shell is 5 centimeters.

I really liked the pattern of this shirt.

I added the bean husks to the compost.

Their relationship is very complicated.

She is collecting shells on the beach.

She likes collecting shells on the beach.

I really like his personality.

There were a lot of cigarette butts under the bench in the park.

He threw the cigarette butt on the road.