I always have a spare key to my house in my bag.

He is posting private tweets by creating a private account.

Please make sure to lock the door before you leave the house.

The key to success is in your own hands.

The velvet worm, known as 'kagimushi' in Japanese, is known for its unique shape and ecology.

The velvet worm is a very unique creature, and its ecology is not yet fully understood.

My key is a very important character.

He is scheduled to graduate from university next spring.

This medicine is effective for the suppression of pain.

He was able to suppress his anger.