Mr. Mitsuhashi is my best friend.

Mr. Miwa is my best friend.

Sanzenaki is my best friend.

Their vocal trio captivated the audience.

I think this fossil is from a trilobite.

He is studying the concept of the 'three talents' in ancient China.

Mr. Mitoma is my best friend.

He was working on that project round the clock.

Due to his somnambulism, he may walk around unconsciously in the middle of the night.

He is working round the clock.