Please be careful as the platform door is closing.

This train has a selective door operation feature.

This math problem can be solved using a specific formula.

We have our wedding ceremony tomorrow.

He said 'Open Sesame' as if by magic, and the door opened.

He shouted 'open sesame' towards the secret door.

His luck finally turned, and he got his dream job.

The swing door of this restaurant opens and closes automatically.

He peeped through the door scope to see who had come.

He lost everything.