He bought six apples.

He does yoga every day to increase his body's flexibility.

He became lost in the crowd.

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

Demography is an important tool for understanding various aspects of society.

I used an optical microscope for an experiment at school.

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'.

His attack was very powerful.