His posture is always erect.

He stood straight, stretching his back.

He is acting based on his belief in the law of causality.

The chime rang, and the class began.

He wrote a message using mirror writing.

He is good at composing freeform haiku.

This boundless universe is beyond our imagination.

His poetry has a beautiful rhythm.

Her dance was moving rhythmically and beautifully.

He was finally able to make his company independent.