He is working hard all day.

This gold nugget is only one ounce.

His clear voice was so clear that everyone could understand his talk.

His voice was clear and resonated throughout the venue.

He said his throat hurts.

He was put in prison.

This crucible is the pottery I made.

He looked at the mound and imagined that ancient people lived there.

The character '婁' is frequently used.

She became a widow at a young age.