He raced in a marathon.

The gerenuk is an animal with a very unique appearance.

Have you ever seen a gnu?

Please use the emergency stairs in case of a fire.

Due to the earthquake, the city declared a state of emergency.

He caught the ball with a swift movement.

Surprised by the sudden heavy rain, I forgot my umbrella.

He has acquired the skill of speedreading, allowing him to read many books.

He finished reading the book by speedreading.

He started running swiftly.