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 always speaking ill of people.

He had a hard time last night because of a hangover.

He got sick from drinking last night.

I'm fed up with his pranks.

He stood out in a bad way in the class.