This fountain pen is my favorite.

A special event was held to celebrate his 100th birthday anniversary.

Sennenji is my best friend.

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

Due to the rain continuing for days on end, our picnic was cancelled.

He succeeded in a difficult project with the spirit of 'ishi no ue ni mo sannen', which means great works are performed by perseverance.

In regions of permafrost, the effects of global warming are severe.

The culture of the Nara period played a very important role in Japanese history.

During the Ice Age, the climate of the Earth changed significantly.

He survived through the Dark Ages.