Her smile is very natural, and it feels comfortable.

In philosophy, natural law refers to the moral laws of the universe.

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 is known as the supreme leader of that country.

Among my family, I am the tallest.

I am interested in the culture of China.