He is so engrossed in his work, it's like 'Wu's cow gasping at the moon'.

He is raising a water buffalo.

He reacts excessively to even small problems, like the proverb 'Kureushi Tsuki ni Aegu' which means 'excessive fear'.

He was panting after exercising.

His story is entirely like a novel.

This problem is too difficult.

He is absorbed in his new project.

This book is too difficult.

He was in a trance with the music.

I work hard every day.