The equilibrium length of this spring is 5 centimeters.

He prefers natural foods.

This wood may spontaneously combust if the humidity is high.

His car spontaneously combusted all of a sudden.

Natural rights are rights that humans have from birth.

He likes to take a walk in the park at dusk.

He was pretending not to witness her wrongdoing.

He played beautiful music using a pellet drum.

Despite its size, this ship is floating on the water surface thanks to buoyancy.

My friend works as a freelancer.