He has perfectly mastered the Received Pronunciation of English.

Can you tell me the phonetic symbol of this word?

It is important to understand the importance of health.

I am interested in Japanese language education.

I am very interested in natural science.

This music is flowing with a pleasant ⠐⠫ along with a beautiful melody.

Natural numbers start from 0 and continue as 1, 2, 3, 4, 5, 6, 7, 8, 9.

He has a strong interest in supernatural phenomena.

Understanding the difference between a natural person and a corporation is important in studying law.

His behavior was unnatural.