Looking at his dumb-looking face, it was hard for me to hold back my laughter.

He conveyed his thoughts through a face-to-face presentation.

He stated his opinion plainly.

The impression from that sight left a deep mark on his heart.

He decided to become a member of the Communist Party.

He deeply believes in the principles of communism.

As a leader who truly lives up to his name, he led the team to success.

He is interested in synchronic linguistics.

When he had a problem due to his own actions, he remembered the phrase 'chickens come home to roost'.

The event horizon is a part of a black hole, referring to the region from which even light cannot escape.