I distributed materials to all participants.

The bright sun was illuminating the sky.

In organic chemistry, tartaric acid plays an important role.

His calculating nature sometimes causes problems.

He decided to become a member of the Communist Party.

My birthday is on the thirteenth.

He deeply studied the three branches of sutras in Buddhism.

This drink has a strong carbonic acid.

Nitric acid is a chemical substance with strong acidity.

I turned thirty years old.