Special relativity is one of the fundamental theories of physics.

This software has forward compatibility.

This software maintains backward compatibility.

Yorunobu has decided to quit smoking.

The character '彌' is the Kyūjitai form of the modern '弥'.

This city is equipped with tactile paving blocks for the visually impaired, which help them move around.

The United Nations Children's Fund is working to improve the lives of children around the world.

Please go straight down this road.

Aiki made pancakes and ate them.

This sushi uses raw fish.