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.

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

I am very interested in natural science.

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

Natural selection plays an important role in the evolution of organisms.

I was moved by the beauty of nature.

Calculating the natural logarithm is an important part of mathematics.