This old document is very important for understanding our history.

He is an expert in paleography, and he is good at deciphering ancient handwritten documents.

Please hurry up because we don't have time.

This ancient document is difficult to read, and it takes time to decipher.

He succeeded in deciphering the ancient documents.

It took him a week to decipher the ancient document.

He fell ill with the flu.

She let out a laugh that sounded like 'kaka'.

How long does it take to go from Tokyo to Osaka by Shinkansen?

He is the person in charge of this project.