The Third International was a historically important organization.

He started a business without a plan, forgetting the lesson of 'peach and chestnut seeds take three years to bear fruit, persimmons eight years.'

I maintain my health by doing aerobic exercises every day.

This shape is called a gyrobifastigium.

This shape is called a gyrobifastigium.

His room was like a chaos.

That terrifying character scared the children.

The valley is part of the beautiful scenery of this area.

I record my lessons every day.

Special relativity is one of the fundamental theories of physics.