He is a diligent student.

He is always working busily.

Protein-degrading enzymes play a role in breaking down unnecessary proteins in the body.

I mainly use public transportation facilities for commuting.

He had a throat problem, and it was found that his posterior cricoarytenoid muscle was not functioning properly.

He wrote his name using the character for 'work'.

Kou is always tackling everything with a high-spirited attitude.

He answered in a disconcerted manner to the sudden question.

Kira is always shining brightly.

He looked like a god.