Sidney is my best friend.

Kama is my best friend.

In physics, kerma is a unit of energy given by radiation to matter.

I am analyzing the results of the questionnaire.

Her heart is healthy.

She is wearing a wool sweater.

The crows are cawing, caw, caw.

This software is still in beta.

The theme of today's meeting is environmental protection.

His narration made the story more vivid.