He is doing a special exercise to strengthen his sternohyoid muscle.

He is a character who decides his own fate.

The exam period is very busy.

He was behaving as if he was crazy.

He is truly demonstrating talent that surpasses his master, just as the saying 'the student has surpassed his or her teacher' goes.

He was my student, but now he has become so proficient that it can be said 'the student has surpassed his teacher.'

He cautioned not to speak ill of others, saying, 'Illness enters by the mouth, and disaster does not come out of it.'

When will this pain end?

He felt cognitive dissonance between his actions and beliefs.

He is a world-renowned ichthyologist.