Please apply this external medicine twice a day, in the morning and at night.

After eating at the restaurant, he paid the bill.

He always maintains an attitude of attention.

Everyone, attention!

Always be careful when crossing the road.

I forgot the instructions from my mother.

My new camera comes with a fisheye lens.

She put on coloured contact lenses and changed the color of her eyes.

The lenticular galaxy was named so because its shape resembles a lens.

He ended up being the subject of a candid camera.