By training the frontalis muscle, your facial expressions will become more expressive.

His coracoid process was fractured.

When the arrector pili muscles contract, goosebumps occur.

The cold caused my arrector pili muscles to contract, giving me goosebumps.

He is immersed in the study of the rostrum bone.

What is the constant term of this equation?

He is an excellent combatant.

His research is drawing society's attention to environmental issues.

Please store the food in the refrigerator.

My zodiac sign is Aries.